Analysis of Evaporative 

On-Board Diagnostic 

(OBD) Readiness and 

DTCs Using I/M Data

Final Report 

Contract No. EP-C-12-017 

Work Assignment 2-06 

Prepared for: 

U.S. Environmental Protection 

Agency 

Prepared by: 

Eastern Research Group, Inc. 

February 19, 2014 
ERG Project No.: 0308.02.006.001 

Analysis of Evaporative 

On-Board Diagnostic (OBD) Readiness 

and DTCs Using I/M Data 

Contract No. EP-C-12-017 

Work Assignment 2-06 

Final Report 

Prepared for: 

Carl Fulper, Work Assignment Manager 

Kent Helmer, Project Officer 

U.S. Environmental Protection Agency 

2000 Traverwood Dr. 

Ann Arbor, MI 48105 

Prepared by: 

Meredith Weatherby 

Michael Sabisch 

Sandeep Kishan 

Eastern Research Group, Inc. 

3508 Far West Blvd., Suite 210 

Austin, TX 78731 

February 19, 2014 
i 

Table of Contents 

1.0 Introduction .............................................................................................................. 1

2.0 Summary of Analysis Results for Evap Monitor Readiness ........................................... 4

2.1 Defining Initial Tests ........................................................................................ 4

2.2 Percent of Initial Inspections with Ready Evap Monitors................................... 5

2.3 Percent of Test Cycles with Ready Evap Monitors ............................................ 6

2.4 Trends of Evap Monitor Readiness by Vehicle Age .......................................... 7

2.5 Trends of Evap Monitor Readiness by Age with Out-of-Cycle Tests Removed 15

2.6 Multiple Inspection Cycles with Evap Monitors “Not Ready” ......................... 18

3.0 Summary of Analysis Results for Evap DTCs Set ....................................................... 18

3.1 Percent of Evap Monitor Ready Inspections with Stored Evap DTCs .............. 20

3.2 Trends of Evap DTCs Set by Age ................................................................... 21

3.3 Trends of Evap DTCs Set by Age with Out-of-Cycle Tests Removed ............. 29

3.4 Evap DTC Rates for States Combined ............................................................. 33

3.5 Evap DTCs over Multiple Inspection Cycles ................................................... 35

3.6 Evaluation of Evap DTC rates based on the Prior I/M Cycle’s Evap Monitor 

Readiness Status ............................................................................................. 36

4.0 Most Common Evap DTCs ......................................................................................... 36

4.1 Most Common Individual Evap DTCs ............................................................ 36

4.2 Most Common Individual Evap DTCs and Evap DTC Combinations .............. 38

5.0 Conclusions ............................................................................................................ 40

Appendix A Summary of Data Filters Applied the States’ Data .............................................. A-1

Appendix B Tables of Percentage of Evap Monitors “Not Ready” by Calendar Year and Model 

Year for Each State ...................................................................................................... B-1

Appendix C Tables of Percentage of Evap DTCs Set by Calendar Year and Model Year for 

Each State .................................................................................................................... C-1

Appendix D Tables of Individual DTCs Set by Calendar Year and Model Year for Some 

Common Evap DTCs .................................................................................................. D-1

Appendix E Tables of Most Common Evap DTCs and DTC Combinations Set for 

Each State .................................................................................................................... E-1

List of Tables 

Table 1. Calendar Years and Other Program Information for Each State......................................3

Table 2. Initial Test Monitor Readiness Results for All States .....................................................5

Table 3. Evap Monitor Readiness Status for All Tests Within an I/M Cycle for All States ..........6

Table 4. Generic P0 Evap DTCs ................................................................................................ 19

Table 5. Percent of Inspection Cycles with a “Ready” Evap Monitor and One or More Evap 

DTCs ........................................................................................................................................ 21

Table 6. Counts of Instances for Each Evap DTC by State......................................................... 37

Table 7. Evap DTCs Most Commonly Found in All States’ Data .............................................. 38
ii 

List of Figures 

Figure 1. Percent of Inspection Cycles with Evap Monitor Ready at Least Once by Age for State 

A .................................................................................................................................................8

Figure 2. Percent of Inspection Cycles with Evap Monitor Ready at Lease Once by Age for State 

B .................................................................................................................................................9

Figure 3. Percent of Inspection Cycles with Evap Monitor Ready at Least Once by Age for State 

C ............................................................................................................................................... 10

Figure 4. Percent of Inspection Cycles with Evap Monitor Ready at Least Once by Age for State 

D ............................................................................................................................................... 11

Figure 5. Slope of Percent of Inspections with Evap Monitor Ready by Age Trend Lines with All 

Data Unmodified ....................................................................................................................... 14

Figure 6. Slope of Percent of Inspections with Evap Monitor Ready by Age Trend Lines with 

Data Modified – Out-of-Cycle Inspections Removed ................................................................ 16

Figure 7. Slope of Percent of Inspections with Evap Monitor Ready by Age Trend Lines 

Comparing All Data Unmodified and Data Modified (Out-of-Cycle Inspections Removed) ...... 17

Figure 8. Percent of Inspections with Evap DTCs by Age for State A ........................................ 22

Figure 9. Percent of Inspections with Evap DTCs by Age for State B ........................................ 23

Figure 10. Percent of Inspections with Evap DTCs by Age for State C ...................................... 24

Figure 11. Percent of Inspections with Evap DTCs by Age for State D ...................................... 25

Figure 12. Slope of Percent of Evap Monitor Ready Inspections with Evap DTCs by Age Trend 

Lines with All Data Unmodified ............................................................................................... 28

Figure 13. Slope of Percent of Evap Monitor Ready Inspections with Evap DTCs by Age Trend 

Lines with Data Modified – Out-of-Cycle Inspections Removed ............................................... 31

Figure 14. Slope of Percent of Evap Monitor Ready Inspections with Evap DTCs by Age Trend 

Lines Comparing All Data Unmodified and Data Modified (Out-of-Cycle Inspections Removed)

 ................................................................................................................................................. 32

Figure 15. Slope of Percent of Evap Monitor Ready Inspections with Evap DTCs by Age Trend 

Lines For States A, B, and C Combined and State D Trend Lines with Data Modified – Out-ofcycle Inspections Removed ....................................................................................................... 34
1 

1.0 Introduction 

This report presents results from an analysis of light-duty gasoline-powered vehicle Onboard Diagnostic (OBD) evaporative emissions control system (evap) diagnostic trouble codes 

(DTCs) using inspection and maintenance (I/M) program data from four states. The purpose of 

this analysis was to better understand evap monitor readiness trends, to quantify evap DTC rates 

for light-duty vehicles subjected to an I/M program, and to better understand the prevalence and 

interrelationships of evap DTCs in an I/M fleet. Evaporative monitor readiness results were 

assessed for initial tests and retests, and for those vehicles that did have an evaporative monitor 

status of “ready”, evaporative DTCs were evaluated by vehicle model year (1996 and newer) and 

calendar year (calendar years 2003-2011). Evaporative monitor readiness was also evaluated to 

better understand readiness trends, to determine if evaporative monitor readiness status might be 

masking evaporative trouble codes, and to determine how many vehicles never have a “ready” 

evaporative monitor over multiple inspection cycles. In this context, an inspection cycle 

generally consists of one or multiple tests performed within a four-month window, usually until a 

pass is achieved or a waiver is issued. A large percentage of the inspection cycles in the I/M 

programs for these states consist of a single passing inspection for a vehicle within that four 

month period (additional details regarding “initial” tests and “inspection cycles” are provided in 

Section 2.1, “Defining Initial Tests”). Trends in readiness and DTC rates were evaluated and 

compared by calendar year, vehicle model year, inspection cycle and vehicle age across the four 

states of analysis. Individual evaporative DTCs were also tracked for specific vehicles over 

multiple inspection cycles in an effort to better understand the efficacy of evaporative system 

repairs, and evaporative DTC combinations were evaluated to better understand the interactions 

and interdependence of evaporative system DTCs. 

In this report, the results of analysis of data from four states (identified as “State A” 

through “State D” for anonymity) are presented. The data was split into calendar year for each 

state, and only model years 1996 and newer were included in this analysis. Pre-1996 model year 

vehicles weren’t included in the analysis since OBDII compliance was not federally mandated 

until model year 1996. Although OBD monitoring of evap control systems was present 

beginning with model year 1996 vehicles, enhanced OBD evap monitoring of federally-certified 

Tier 1 vehicles began in model year 1996 but was not fully phased-in until model year 1999 

vehicles (enhanced evap phase-in of California-certified NLEV vehicles began in model year 

1995 with full phase-in by model year 1998 vehicles). Because enhanced OBD evap monitoring 

of federal vehicles was not fully phased in until model year 1999 vehicles, some report results, 

such as readiness trends presented in Section 2.4 and DTC trends presented in Section 3.2, only 

include model year 2000 and newer (enhanced evap) vehicles. Also, when reviewing results, it 
2 

should be noted that federal phase-in of Tier 2 evap requirements began in model year 2004 with 

full compliance by model year 2007, while phase-in for CARB LEVII evap requirements began 

in model year 2004 with complete phase-in by MY2006. 

The standards to which new vehicles are certified may have an influence on DTC rates 

presented in this report. Phasing in from model years 2000-2003, California-certified vehicles 

(vehicles either sold in California or in other states that have adopted California standards) were 

equipped with 0.020" leak detection monitoring (in lieu of 0.040" federal leak detection 

requirements). This may account for some difference in detected evap failures, and hence 

reported evap DTC rates, if some vehicles included in this analysis conformed to tighter 

monitoring standards and could theoretically identify more evap system failures. 

The date states acquired the ability to test vehicles with CAN (controller area network) 

communication could slightly alter the fleet receiving OBD inspections (and hence evap rates), 

although with the federally-mandated 2004-2008 CAN rollout and the new model year 

exemption, this will have a very minimal impact on fleet profile and overall study results over 

the period of evaluation. 

The data from these states spans the calendar years of 2004 through 2012, depending on 

data available from each state at the time of analysis. Table 1 shows the calendar years of data 

analyzed for each state as well as the I/M program cycle frequency (annual or biennial) and 

model year exemption period for the I/M program during the calendar years of data analyzed for 

each state. The last column highlights each state’s readiness criteria (how many “not ready” 

monitors are allowed for each state’s OBD test), although as stated previously each state’s ready 

criteria was not used in this evaluation. When comparing results among states, it is noteworthy 

that differences in average ambient temperature ranges, altitude or vehicle fleet longevity 

(vehicle age distribution) among the states could impact each state’s evap readiness rates and 

DTC results presented in this report. 
3 

Table 1. Calendar Years and Other Program Information for Each State 

State 

Code 

Calendar 

Years of Data 

Available

OBD 

Inspection 

Frequency

Exemption Period Ready Criteria (Number of 

monitors allowed to not be ready 

for an I/M inspection)

A 

2004-2010 Biennial

Resale: First 4 years 

Biennial: First 6 

years 

2 allowed for all vehicles (a bit 

more complex: based on vehiclespecific lookup tables) 

B 

2007-2012 Annual First 3 model years 

1996 – 2000: 2 allowed 

2001 and newer: 1 allowed 

C 

2005-2009 Biennial First 4 model years 

1996 – 2000: 2 allowed 

2001 and newer: 1 allowed 

D 2004-2011 Biennial First 4 model years N/A, OBD not enforced 

In order to minimize the differences of State I/M programs, the OBD readiness 

determination and OBD pass / fail determination from each state's program were excluded from 

analysis. The results in this report are based on the OBD evap monitor readiness status (without 

regard to the state’s I/M readiness determination) and the presence (or lack of) evap-related 

DTCs (without regard to MIL command status). In Section 3 (DTC Analysis), all vehicles with a 

“not ready” evap monitor are excluded, and the calendar year / model year percentages are based 

only on those vehicles with a “ready” evap monitor, unless otherwise indicated. In addition, the 

DTC analysis results in this report are based on all I/M records with evap DTCs, regardless of 

MIL command or pass/fail status of the test. Therefore, the evap DTC rates presented in this 

report may include non-active (historical) codes and be higher than would be seen using only 

I/M fails (evap DTCs with MIL commanded on). These history codes don’t represent a current 

malfunction but a problem that occurred sometime in the vehicle’s recent past. Information 

regarding the impact of the use of these codes with no MIL illumination is provided in Section 

3.0. 

The OBD ready criteria for State D indicates that the OBD program is not enforced. This 

means that the OBD test result is not a criteria for passing or failing an inspection. The pass / fail 

determination for that state is based on results of an IM240 tailpipe test and a gas cap 

functionality test. A vehicle that fails the IM240 or gas cap test fails the overall test and must 

pass a re-inspection to receive an overall pass. A vehicle with stored OBD codes and an 

illuminated malfunction indicator light (MIL) will not fail the test unless the vehicle also fails the 

IM240 test or the gas cap functionality test. 

A summary of the analysis objectives and results of analysis is provided in the following 

sections. 
4 

2.0 Summary of Analysis Results for Evap Monitor Readiness 

In order to understand and quantify the evap DTC rates, vehicles with an evap monitor 

ready at the time of the I/M test were first identified. Therefore, the first part of the analysis 

involved quantifying how many vehicles had a “ready” evap monitor at the time of the initial or 

re- inspection for one inspection cycle. 

The objectives for the analysis in this section were to quantify the percent of vehicle 

inspections with evap monitors “ready and “not ready” at the time of inspection, evaluate the rate 

of readiness as vehicles age, and compare the results among the states to determine if the 

increase of “not ready” vehicles was similar for each state. 

2.1 Defining Initial Tests 

The purpose of the analysis was to quantify the percent of inspection cycles with an evap 

monitor status of “not ready” for each inspection in the cycle, so it was important to define each 

vehicle’s inspection cycle by finding the initial test in each cycle. The analysis was performed 

using multiple calendar years of I/M data for each state. Before finding the initial tests in the 

dataset for each state, the datasets were filtered to remove any suspect I/M records and any data 

points not to be considered in the analysis. A general summary of the data QC and filtering 

performed on the states’ data is contained in Appendix A. 

The procedure for defining an initial test varied from state to state, depending on how 

each state organizes its I/M data and what records and data are stored in each database. For state 

A, the test record for any vehicle that completes and passes a final test in an I/M cycle contains a 

sticker number (this indicates the vehicle completed all I/M program requirements for that year). 

This sticker number is used to identify final tests in each I/M cycle (and hence the initial test for 

the next cycle). 

In other states, a variety of methods were used to determine initial tests and inspection 

cycles. In states B and D, an initial I/M test was defined by finding an I/M test which followed a 

record with an overall result of “Pass”. For State B, this method was used in conjunction with the 

file that lists all the waivers in State B, because for a small portion of the vehicles, a final test can 

still have a result of “Fail” when a waiver was issued. 

In state C, the sticker number could typically be used to determine the initial test; 

however, in about 5% of the records the sticker number did not adequately define the initial tests. 

For these tests, the time between two tests was calculated. If the time elapsed between any two 
5 

tests was more than 180 days (even if no valid sticker number was issued), the test that was over 

180 days later was defined as an initial test. 

2.2 Percent of Initial Inspections with Ready Evap Monitors 

Table 2 summarizes the evap monitor readiness status for all initial inspections from each 

state. Note that these percentages represent the percent of inspections for vehicles in the I/M fleet 

that are not ready at the time of their initial inspection. In some cases, this may be vastly 

different from the percent of vehicles in the registered fleet that would have evap monitors not 

ready, because each state has an exemption period for new vehicles. Depending on the number of 

years exempted from I/M testing, the I/M fleet will be significantly older and could therefore 

have a higher incidence of evap monitor “not-readiness” than the registered fleet (based on evap 

monitor readiness vs. vehicle age trends shown in Section 2.4). 

From Table 2, it can be seen that the percent of initial inspections for vehicles in the I/M 

fleet with an evap monitor “not ready” ranged from approximately 9% to 12% (evap monitor 

readiness ranged from approximately 88% to 91%). The highest incidence of evap monitor not 

readiness at initial inspection was in State A, where almost 12% of the vehicles receiving initial 

tests had evap monitors that were not ready. Table 1 shows that State A also has a 6 model year 

exemption for new vehicles for I/M testing, which could indicate that State A would have the 

oldest I/M fleet. The age distributions of the vehicles tested in each calendar year were calculated 

to determined the relative age of each of the I/M fleets of States A, B, C, and D, and it was 

determined that the age of the I/M fleet is older for State A than for the other states. For example, 

in calendar year 2008, 88% of the inspections in State A were for vehicles that were 6 years old 

or older. In comparison, in States B, C, and D for calendar year 2008, only 62% - 70% of the 

inspections were for vehicles 6 years old and older. 

Table 2. Initial Test Monitor Readiness Results for All States 

State Percent of Inspections for I/M 

Fleet with Evap Monitor Ready 

at Initial Inspection

Percent of Inspections for I/M 

Fleet with Evap Monitor Not 

Ready at Initial Inspection

A 88.3% 11.7%

B 90.3% 9.7% 

C 91.2% 8.8%

D 91.3% 8.7%

Note: These results are for model years 1996 and newer 

Table 2 shows that across different I/M programs with varying calendar years of data 

present, the results all show that approximately 90% of the initial inspections have evap monitors 
6 

ready. The results indicate that about 10% of the initial inspections in any given I/M program are 

going to have an evap monitor that is not ready. The similarity in this percentage for all of the 

states suggests that this number could approximate a national percentage of initial inspections 

with “not ready” evap monitors for vehicles in an I/M fleet. 

2.3 Percent of Test Cycles with Ready Evap Monitors 

For this analysis, the readiness of all tests within inspection cycles (not just the initial 

test) was analyzed to determine the number of inspection cycles with a “not ready” evap monitor. 

In many cases, there was only one test for the vehicle in the I/M cycle, but in some cycles, the 

vehicle received multiple inspections. In the previous section, it was found that roughly 9% to 

12% of the initial inspections had an evap monitor status of “not ready”. Table 3 shows that these 

percentages decrease to 7% to 11% for all inspections in an I/M cycle. This trend of an increase 

in evap monitor readiness is likely due to the fact that the evap monitor has multiple chances to 

achieve readiness in inspection cycles (as opposed to one chance in a single inspection). These 

multiple chances are the likely cause of the increase in evap monitor readiness, despite the 

possibility of OBD resets resulting from vehicle repairs and battery disconnects during the 

inspection cycle. This increase in readiness indicates that “not ready” evap monitors occasionally 

achieved readiness for retests in inspection cycles with multiple tests. Similar to the initial test 

results from the previous section, the percentage range of “not ready” evap monitors is very 

similar among all the states that were analyzed and could approximate a national percentage of 

vehicles in I/M programs with “not ready” evap monitors.

Table 3. Evap Monitor Readiness Status for All Tests 

Within an I/M Cycle for All States 

State Percent of I/M Fleet Inspections 

with Evap Monitor Ready For Least 

One Test in the Inspection Cycle

Percent of I/M Fleet Inspections 

with Evap Monitor Not Ready For 

All Tests in the Inspection Cycle

A 89.6% 10.4%

B 92.1% 7.9%

C 92.8% 7.2%

D 91.4% 8.6%

Note: These results are for model years 1996 and newer 

When comparing these results with previous analysis of non-evap OBD monitors, the 

percentage of “not ready” evap monitors was much higher than for other OBD monitors. For 

example, when looking at all the OBD monitors’ readiness for one of these states, the non-evap 

OBD monitors had an overall “not ready” percentage in the 1% - 2% range instead of the 7%-

11% range seen for the evap monitor. As the OBD evap monitor is typically subject to more 
7 

rigorous enabling criteria (specific vehicle operation and soak requirements) than other monitors 

in order to achieve readiness, this monitor is generally one of the last monitors to achieve 

readiness, and will likely have a higher fleet-wide “not ready” rate than other monitors at any 

point in time (such as during an I/M inspection). Due to the longer “not ready” period of the 

OBD evap monitor, it is possible that attempts to mask MIL illumination in order to pass an I/M 

test (through a battery disconnect or code clearing) could contribute somewhat to the OBD evap 

monitor readiness rates being lower than those of the other monitors in the I/M data evaluated for 

this study. 

2.4 Trends of Evap Monitor Readiness by Vehicle Age 

The next analysis involved determining the trend of the increase of the percent of 

inspections with “not ready” evap monitors by age for each state and to compare the trends 

across the states. To do this the data was separated by calendar year and vehicle model year and 

tabulated the evap monitor readiness status of all the inspection cycles for each of the states. 

Specifically, the calculations involved finding the percentages of inspection cycles in which the 

vehicle’s evap monitor was “ready” for at least one test during the cycle, and results for each 

state were graphed to illustrate the trends of evap monitor readiness for vehicles as they age. 

These results are shown in Figures 1 through 4. 
8 

Figure 1. Percent of Inspection Cycles with Evap Monitor Ready at Least Once by Age f
9 

Figure 2. Percent of Inspection Cycles with Evap Monitor Ready at Lease Once by Age 
10 

Figure 3. Percent of Inspection Cycles with Evap Monitor Ready at Least Once by Age f
11 

Figure 4. Percent of Inspection Cycles with Evap Monitor Ready at Least Once by Age f
12 

On the figures, only model years 2000 and newer are shown. This is because although 

OBD evap systems were present in some 1996 vehicles, full phase-in of enhanced evap OBD did 

not occur until 1999. In order to develop trend lines for the evap monitor readiness percentage by 

age, using only 2000 and newer model years (a full year after phase-in was complete) ensures 

that the data used would be most representative of the trends for enhanced evap vehicles. In each 

graph, the different colored lines with points represent the actual data from each model year and 

age for the state. The solid black line with no points shows a trend line1 for all model years 

which predicts the percentage of evap monitor readiness at a given vehicle age. The analysis was 

conducted to calculate the percentage of inspections with “ready” evap monitors for all vehicles 

in a given age (from 2 to 10 years old in most states). The vehicles at any given age can have a 

range of odometer values, so they may not all be in the same condition in terms of wear-and-tear 

and mileage. 

The reference lines on the graphs which cross at 89% and 96% to help in comparing the 

figures for each of the states. When comparing the figures, it can be seen that States B and C 

have readiness percentages that are close to one another, about 98% evap monitor readiness for 2 

year old vehicles, and about 89% evap monitor readiness for 8 year old vehicles. In comparison, 

States A and D have lower readiness rates (90% to 94%) for the 2 year old vehicles than States B 

and C. 

The graph of State A differs from those of the other states. First, the range of the 

percentage of inspection cycles with “ready” evap monitors for all model years at a given age is 

larger than for the other states, especially for the newest vehicles. For example, a 2 year old 

vehicle in State A has a range of 87% - 99% of the inspections with an evap monitor ready, while 

that range is only 91% - 95% for state D. State A has a 6 model year exemption (with test-onresale after a vehicles is 4 years old), so the number of 2 year old vehicles in that dataset is small 

compared to the vehicles in the other model years. These vehicles are probably not representative 

of the 2 year old vehicles in the I/M fleet, as they are most likely vehicles that have moved into 

the state from another area or are coming in for an inspection for some other reason even though 

it is not required. This is one possible explanation for why the percentage of 2 year old vehicles 

with evap monitors “not ready” in State A is larger than for 2 year old vehicles in other states. 

Also, State A has a biennial inspection frequency. Vehicles start receiving tests when they are 6 

years old and then are only tested every other year after that. The “zig-zag” on the curves follows 

a biennial trend (this trend is also evident but not as pronounced for states C and D, the other 

biennial programs). The inspection totals by calendar year and age (shown in the tables in 

 

1

 Trend lines were developed using linear regression techniques. 
13 

Appendix B) show that the total number of inspections is lower for these “off” I/M years, and the 

overall average readiness is also lower for these “off” I/M years. 

The other state that has percentages that do not fall on the reference lines for the 2 and 8 

year old vehicles is State D, which does not enforce the OBD program and therefore OBD 

monitor readiness is not a requirement for the I/M test. 

The results in the graphs for each state show that vehicles were more likely to have an 

evap monitor status of “not ready” as the vehicle aged. The percentages and rates of increase of 

evap monitor not readiness differed for some of the states. The vehicles in state D were more 

likely than the other states to have an evap monitor status of “not ready”, even when they were 

only 2 years old, and the slope of the increase of evap monitors being not ready as vehicles aged 

was not as steep as for States B and C. 

Figure 5 shows the tendency of readiness decreasing as a function of vehicle age more 

clearly. Trend lines of the “predicted” percentage of vehicles with an evap monitor ready versus 

age are shown, and it can be seen that the slope of the lines for States B and C are steeper than 

for States A and D. States A and D have nearly identical rates of decrease in readiness by vehicle 

age, although State A is approximately 5% lower than State D. Individual tables listing results 

for each state are provided in Appendix B. 
14 

Figure 5. Slope of Percent of Inspections with Evap Monitor Ready by Age 

Trend Lines with All Data Unmodified 
15 

2.5 Trends of Evap Monitor Readiness by Age with Out-of-Cycle Tests 

Removed 

The data presented in Figure 5 above shows the results of the trend line predicting the 

percent of inspections with evap monitors ready versus vehicle age. The results in Figure 5 show 

that the slopes of the lines (the decrease in the rate of readiness as vehicles age) for States A and 

D are different than the slopes for States B and C. For State A especially, this could be due to the 

fact that there is a 6 model year exemption period for I/M testing, so the vehicles less than 6 

years old that receive an I/M test may be resale vehicles and may not be in the same condition as 

similarly-aged vehicles in the rest of the fleet. Also, most of these states have a biennial I/M 

program, so the number of inspections in these out-of-cycle years is lower than for the on-I/M 

cycle years, and the readiness rates seen in these out-of-cycle years is lower on average than the 

in-cycle years. 

Since out-of-cycle inspections may be due in part to vehicles moving into the state and/or 

resale vehicles, results from these out-of-cycle inspections might differ from the in-cycle I/M 

program results, so for comparison to Figure 5 the dataset was modified for each of the states to 

only include inspections of vehicles that would typically be subject to the I/M program at the 

time of their inspection. This involved removing inspections in which the vehicle was too new 

for the I/M inspection and also removing inspections during an “off” year in the biennial I/M 

programs. Once the datasets for each state were modified in this way, the trend lines2 of vehicle 

age versus the percentage of vehicle inspections with a “ready” evap monitors ready for at least 

one test during the cycle were recalculated. Figures 6 and 7 show the results from these trend 

lines calculated with the modified datasets. It should be noted that this was done only to evaluate 

the effect of “out-of-cycle” I/M inspections on the evap monitor readiness rate in each of the I/M 

programs. Removing these “out-of-cycle” tests appears to increase the evap monitor readiness 

rate from the overall rates seen in each I/M program (in-cycle and out-of-cycle tests inclusive). 

States A and C are both enforced biennial programs, and therefore there are more enforced “outof-cycle” tests in States A and C than in States B and D (State B is an enforced annual program 

and State D is biennial but unenforced for OBD). Additional influences may also arise due to 

vehicles moving into the various states from non-I/M areas and being subjected to an I/M 

program for the first time. Investigation into the causes of differences in evap readiness rates 

between “in-cycle” and “out-of-cycle” tests was beyond the scope of this work assignment and 

was not performed. 

 

2

 Trend lines were developed using linear regression techniques. 
16 

Figure 6. Slope of Percent of Inspections with Evap Monitor Ready by Age 

Trend Lines with Data Modified – Out-of-Cycle Inspections Removed 
17 

Figure 7. Slope of Percent of Inspections with Evap Monitor Ready by Age 

Trend Lines Comparing All Data Unmodified and Data Modified (Out-of-Cycle Inspection
18 

Figure 6 shows that once the out-of-cycle inspections were removed, results from all four 

states have very similar percentages of vehicle readiness by age. This graph shows that as a 

vehicle ages, it will be more likely to have an evap monitor “not ready” during an I/M cycle, and 

that the increase in its likeliness of having an evap monitor “not ready” is approximately 1% per 

year as the vehicle ages (for vehicles in their I/M inspection cycle). 

Figure 7 shows combined linear trend lines of the unmodified and modified data sets. 

This graph is a combination of Figures 5 and 6. 

2.6 Multiple Inspection Cycles with Evap Monitors “Not Ready” 

The purpose of this next analysis was to identify patterns of vehicles having “not ready” 

evap monitors for all inspections over multiple consecutive inspection cycles. The subset of 

vehicles for which the evap monitor was “not ready” for all tests in an inspection cycle was 

evaluated, and the evap monitor status for those vehicles was tracked across inspection cycles on 

subsequent calendar years. Even though previous results indicated that up to 15% of inspections 

for older vehicles could have a “not ready” evap monitor, the results of this analysis show that 

those are not the same vehicles each time. The results from all states show that most vehicles 

(over 97%) have an evap monitor status of “not ready” only one or two times in their entire I/M 

history. For the vehicles that were in the data for at least 2 inspection cycles, only about 0.5% of 

them have an evap monitor status of “not ready” each time they come in for an inspection. 

3.0 Summary of Analysis Results for Evap DTCs Set 

An analysis of the number of evap DTCs set during any test in the I/M cycle was 

performed for all vehicles that had a ready evap monitor for at least one inspection during an I/M 

cycle in each calendar year. Several OBD P0 and P1 DTCs that pertain to the evaporative 

emissions control system were considered3. Less than 0.1% of the DTCs present were P2 or P3 

codes. The generic (P0) SAE J2012 evap DTCs of interest for this study are listed in Table 4, 

along with the evap-related P1 (manufacturer-specific) fault codes. SAE J2012 definitions are 

provided for all generic P0 fault codes, but P1 codes were defined based on Internet research (as 

shown in Table 4). In general, the evap-related P1 (manufacturer-specific) fault codes included 

in this analysis correspond to the generic P0 fault code categories. 

As previously stated, all evap DTCs were considered in this analysis, regardless of MIL 

command status. Consequently, the evap DTC rates presented in this report may include non-

 

3

 P2 and P3 codes were not considered in this analysis due to the small numbers of those codes present in the states’ 

data. 
19 

active (historical) codes and be higher than would be seen using only I/M fails (evap DTCs with 

MIL commanded on). These history codes don’t represent a current malfunction but a problem 

that occurred sometime in the vehicle’s past but that is not yet cleared from the vehicle’s OBD 

system. It was not possible to determine how long it had been since the MIL had been 

extinguished for these history codes. The number of these history codes varied among states. For 

states A and D, approximately 30% to 50% of all evap DTCs are present without a MIL 

commanded on, while for States B and C, the DTCs without a MIL commanded on comprised 

less than 15% of all evap DTCs. These DTCs with no MIL illumination were included in the 

analysis to provide as much information as possible regarding potential evap problems in the 

vehicle fleet, but it’s possible some of the DTCs may be indicative of a problem that existed but 

is now corrected and has not been cleared from the vehicle computer’s history yet. Therefore, the 

overall DTC rates presented in this report are not intended to represent I/M program evap fail 

rates, since vehicles with evap codes but no MIL illumination would not have failed the OBD 

I/M inspection based solely on the presence of evap codes. 

The following subsections provide summary analysis results, and additional details are 

provided in the report appendices. 

Table 4. Generic P0 Evap DTCs 

DTC Code DTC Description

P0093 Fuel System Leak Detected - Large Leak

P0094 Fuel System Leak Detected - Small Leak

P0440 Evaporative Emission Control System Malfunction

P0441 Evaporative Emission Control System Incorrect Purge Flow

P1441 Evaporative Emission System Flow During Non-Purge1

P0442 Evaporative Emission Control System Leak Detected (small leak)

P0443 Evaporative Emission Control System Purge Control Valve Circuit

P1443 Incorrect evaporative system purge control valve flow1

P0444 Evaporative Emission Control System Purge Control Valve Circuit Open 

P0445 Evaporative Emission Control System Purge Control Valve Circuit Shorted 

P0446 Evaporative Emission Control System Vent Control Circuit Malfunction

P0447 Evaporative Emission Control System Vent Control Circuit Open 

P0448 Evaporative Emission Control System Vent Control Circuit Shorted 

P1448 Evap Canister Vent Control Valve Open1

P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction 

P0450 Evaporative Emission Control System Pressure Sensor Malfunction 

P0451 Evaporative Emission Control System Pressure Sensor Range/Performance 

P0452 Evaporative Emission Control System Pressure Sensor Low Input 

P0453 Evaporative Emission Control System Pressure Sensor High Input

P0454 Evaporative Emission Control System Pressure Sensor Intermittent 

P0455 Evaporative Emission Control System Leak Detected (gross leak)

P0456 Evaporative Emission Control System Leak Detected (very small leak)
20 

DTC Code DTC Description

P1456 Evaporative Emissions Control System Leakage Fuel Tank1

P0457 Evaporative Emission Control System Leak Detected (fuel cap loose/off)

P1457 Evaporative Emissions Control System Leakage EVAP Canister System1

P0458 Evaporative Emission System Purge Control Valve Circuit Low 

P0459 Evaporative Emission System Purge Control Valve Circuit High 

P0465 Purge Flow Sensor Circuit Malfunction 

P0466 Purge Flow Sensor Circuit Range/Performance 

P0467 Purge Flow Sensor Circuit Low Input 

P0468 Purge Flow Sensor Circuit High Input 

P0469 Purge Flow Sensor Circuit Intermittent 

P0496 Evaporative Emission System High Purge Flow

P0497 Evaporative Emission System Low Purge Flow

P0498 Evaporative Emission System Vent Valve Control Circuit Low

P0499 Evaporative Emission System Vent Valve Control Circuit High

1 P1 code descriptions were developed based on Internet research (http://www.innova.com/en-US/Dtc and 

http://engine-codes.com/) using the most common vehicle makes occurring in the I/M data for each code. 

3.1 Percent of Evap Monitor Ready Inspections with Stored Evap DTCs 

For all vehicles with a “ready” evap monitor the number of vehicle test records 

containing evap-related DTCs for each inspection cycle was tabulated by calendar year and 

model year. Using these results, the percentage of all inspection cycles containing an evap DTC 

was calculated. 

The results, shown in Table 5, indicate that between 0.7% and 2.5% of the inspection 

cycles for vehicles with a “ready” evap monitor have a stored evap DTC. Approximately 10% of 

the inspections do not have an evap monitor ready, and for these, the percent of inspections with 

evap DTCs was not calculated, as these vehicles with “not ready” evap monitors could provide 

an artificially low (unrepresentative) evap DTC rate since the OBD system hasn’t completed 

evap system testing for these vehicles. 

The State A percentage of 1.6% may be slightly higher than the rates for States B and C 

because of the six model year exemption period in State A, (which results in an older I/M fleet 

than the other states). State D’s 2.5% DTC rate may be due to the fact that OBD results are not 

enforced in State D. In State D, OBD tests are performed in an advisory capacity, but a vehicle 

can pass the I/M test with the MIL commanded on. The main pass/fail determination is based on 

the IM240 and gas cap functionality test results, unlike the other states (States A, B, and C) 

where the OBD test is the enforced for 1996 and newer vehicles, so an OBD failure results in an 

overall test failure. 
21 

Table 5. Percent of Inspection Cycles with a “Ready” Evap Monitor 

and One or More Evap DTCs 

State Percent of Evap Ready Inspections 

with an Evap DTC Set

A 1.6%

B 0.7%

C 0.9%

D 2.5%

 Note: These results are for model years 1996 and newer 

3.2 Trends of Evap DTCs Set by Age 

The next analysis involved determining the trend of the increase of the percent of evap 

monitor “ready” inspections with evap DTCs by age for each state and to compare the trends 

across the states. The test records with a “ready” evap monitor by calendar year and model year 

were binned, and the percent of inspections with stored evap DTCs by state were tabulated. 

Results were graphed for each state to illustrate changes in the trends of evap DTCs as vehicles 

age. The results are shown in Figures 8 through 11. 
22 

Figure 8. Percent of Inspections with Evap DTCs by Age for State A 
23 

Figure 9. Percent of Inspections with Evap DTCs by Age for State B 
24 

Figure 10. Percent of Inspections with Evap DTCs by Age for State C 
25 

Figure 11. Percent of Inspections with Evap DTCs by Age for State D 
26 

Only model years 2000 and newer are shown in the figures. As stated in a previous 

section, this is because full phase-in of the enhanced evap OBD system did not happen until 

1999, and using only 2000 and newer model years (a full year after phase-in was complete) 

ensures that the data used would be most representative of the trends for enhanced evap vehicles. 

In each graph, the different colored lines with points represent data for each model year and 

vehicle age for each state. The solid black line with no points shows a trend line for model year 

2000 and newer vehicles, predicting the percent of vehicle tests that would have a stored evap 

DTC at a given age. The trend lines4 for each state represent the percentage of stored evap DTCs 

at each age for each calendar year combined. The analysis was conducted to calculate the 

percentage of evap monitor “ready” inspections with stored evap DTCs for all vehicles in a given 

age (from 2 to 10 years old in most states). The vehicles at any given age can have a range of 

odometer values, so they may not all be in the same condition in terms of wear-and-tear and 

mileage. 

Although linear trends were found to be most suitable for the ranges of interest of the 

combined data, the by-model-year graphs do show a slight curvature, especially as the vehicles 

age. For State A, the rate of vehicles with evap DTCs seems to increase after the vehicle age of 5 

years, possibly due to State A’s model year exemption of 6 years. Then, all states appear to show 

a general trend of a slight drop in the rate of evap DTCs after 7 years of age. This could be due to 

aging vehicles retiring out of the fleet or other factors, and additional analysis could be 

performed to fit the data more closely for the newer and older age vehicles. The trend lines were 

simply provided to show the general trends for vehicles under 10 years of age. 

The graphs for each state have reference lines to facilitate comparison among the states. 

The horizontal reference lines cross at 0.5% and at 1.5% of the vehicle inspections with “ready” 

evap monitors and with evap DTCs set. States B and C have percentages of evap DTCs set that 

are below these two horizontal reference lines at ages 2 years old and 8 years old. The other 2 

states, States A and D, have DTC percentages that are at or above the 0.5% and 1.5% reference 

lines. 

Again, State A has a 6-year exemption for new vehicles and only performs test-on-resale 

after a vehicles is 4 years old, so the 2 to 5 year old vehicles in that dataset may not be 

representative of the fleet. State D does not enforce the OBD program and therefore, having an 

OBD evap DTC set with a MIL illuminated is not a basis for failing an inspection. Therefore, it 

is expected the rate of evap DTCs will be higher since motorists are not required to make repairs 

 

4

 Trend lines were developed using linear regression techniques. 
27 

based solely on MIL illumination. The differences in these programs may explain the higher 

percentage of evap DTCs set than in the other 2 states. 

The graphs show that vehicles were more likely to have stored evap DTCs as they aged. 

The rate of increase of evap DTCs as vehicles aged was not as steep as for States B and C as it 

was for states A and D. Figure 12 shows the trend lines for all four states combined. On that 

graph, it can be seen that the slope of the lines for States A and D are steeper than for states B 

and C, with the slope for state D being the steepest. This shows lower rates of evap DTCs in 

states with enforced OBD programs. 

The individual tables in Appendix C show the results for each state in more detail. 
28 

Figure 12. Slope of Percent of Evap Monitor Ready Inspections with Evap DTCs by 

Trend Lines with All Data Unmodified 
29 

3.3 Trends of Evap DTCs Set by Age with Out-of-Cycle Tests Removed 

The data presented in Figure 12 shows the results of the percent of inspections with evap 

DTCs set versus vehicle age. 

This dataset was then modified for each of the states to only include inspections of 

vehicles that would be subject to the I/M program at the time of their inspection. This was done 

to allow a comparison between the complete I/M dataset and a modified dataset including only 

“in-cycle” tests. To create the modified datasets, all inspections in which the vehicle was too new 

for the I/M inspection and inspections performed in the “off” year (for biennial I/M programs) 

were removed. Once the datasets for each state were modified in this way, the trend lines for the 

percent of vehicle inspections with “ready” evap monitors and stored evap DTCs versus vehicle 

age were calculated. These revised trend lines are shown in Figures 13 and 14. It should be noted 

that this was done only to evaluate the effect of “out-of-cycle” I/M inspections on evap DTC 

rates in each of the I/M programs, as removing these “out-of-cycle” tests may bias the evap DTC 

rates upward from the overall rates seen in each I/M program (in-cycle and out-of-cycle tests 

inclusive). 

Figure 13 shows that three of the states have very similar rates of increase of evap DTCs 

as the vehicles get older. For these three states, the figure shows that older vehicles are more 

likely to have stored evap DTCs, and the likelihood that a vehicle will have a stored evap DTC 

during the I/M cycles increases by approximately 0.15% per year. 

The slope of the fourth state, State D, is over 3 times higher than the slope of the other 

three states, which as stated previously is likely due to the fact that OBD is not enforced in State 

D. It is possible that the slope of the line for State D is indicative of the minimum rate of increase 

of evap DTCs in a non-I/M area. The rate of increase in a non-I/M area could be even higher 

than the slope for State D, because State D does perform the OBD test on an advisory basis, does 

have an evap repair consumer assistance program, and does have an I/M program that includes 

an enforced gas cap test. 

Figure 14 shows combined trend lines of the unmodified and modified data sets. This 

graph is a combination of Figures 12 and 13. It is interesting to note that the State A and C 

modified and unmodified datasets have very different slopes, while the slopes for the modified 

and unmodified datasets for States B and D are similar. This could be due to the fact that States 

A and C are both enforced biennial programs, and therefore there are more enforced “out-ofcycle” tests in States A and C than in States B and D (State B is an enforced annual program and 

State D is biennial but unenforced for OBD). Additional influences may also arise due to 
30 

previously-untested vehicles moving into the various states and being subjected to an I/M 

program for the first time. Investigation regarding the root causes of differences in evap DTC 

rates between “in-cycle” and “out-of-cycle” tests was beyond the scope of this work assignment 

and was not performed. 
31 

Figure 13. Slope of Percent of Evap Monitor Ready Inspections with Evap DTCs by 

Trend Lines with Data Modified – Out-of-Cycle Inspections Removed 
32 

Figure 14. Slope of Percent of Evap Monitor Ready Inspections with Evap DTCs by 

Trend Lines Comparing All Data Unmodified and Data Modified (Out-of-Cycle Inspection
33 

3.4 Evap DTC Rates for States Combined 

The results from section 3.3 showed that when out-of-cycle tests are removed from the 

data, three of the states have very similar rates of increase of evap DTCs as the vehicles get 

older. For all states, the results show that older vehicles are more likely to have stored evap 

DTCs, and the likelihood that a vehicle will have a stored evap DTC during an I/M cycle 

increases by over approximately 0.15% per year. 

In this section, the number of evap DTCs set by calendar year and model year for those 

three states (States A, B, and C) were combined to calculate one trend line5 of the percent of 

evap DTCs set by vehicle age. The trend line for States A, B, and C combined were plotted 

versus the trend line for State D alone so that the results of States A, B, and C combined (states 

with an enforced OBD program) could be compared with State D (without an enforced OBD 

program). In order to avoid biasing results based on how an I/M program is administered (i.e., 6 

model year new vehicle exemption vs. 3 model year new vehicle exemption), all three programs 

were weighted equally (the slope of the composite trend line was not weighted based on the total 

number of tests analyzed for each program). Also, as stated previously, State D could represent 

a conservative (low) estimate of the evap DTC percentage in a non-I/M area because State D’s 

OBD test result is not enforced. However, it is expected that the evap DTC rate in a non-I/M area 

would be higher, because although OBD is not enforced in State D, it does have an enforced I/M 

program with a fuel cap test, and OBD tests are conducted on an advisory basis. 

Figure 15 shows the results. The points on the figure show the individual data points from 

States A, B, and C combined (in black) and from State D (in red). Each data point on the graph 

represents one calendar year and model year combination of the percent of evap DTCs set for 

one state. The results in Figure 15 show the differences between the percentage of evap DTCs 

for vehicles at different ages when there is an OBD I/M program which includes evap and when 

there is not an enforced OBD I/M program but there is a fuel cap inspection. 

 

5

 Trend lines were developed using linear regression techniques. 
34 

Figure 15. Slope of Percent of Evap Monitor Ready Inspections with Evap DTCs by 

Trend Lines For States A, B, and C Combined and State D 

Trend Lines with Data Modified – Out-of-cycle Inspections Removed 
35 

The data points on the graph show the range of values of the percentage of evap DTCs by 

age for two sets (states A, B, and C combined and state D). The data points on the graph show 

that for the three states with an enforced OBD program, at 4 years old, the percentage of tests 

with evap DTCs was between 0.2% and 0.8%. At 8 years old, the percentage increased to 

between 0.5% and 2.2%, and the rate of increase was approximately 0.15% per year. In 

comparison, for state D, at 4 years old the percentage of tests with evap DTCs was between 1.0% 

and 2.0%. At 8 years old, the percentage increased to between 2.6% and 4.2%, and the rate of 

increase was approximately 0.5% per year. 

The two trend lines in the figure could be an approximation of the percentage and rate of 

increase of evap DTCs as vehicles age in I/M areas and in non-I/M areas. Again, however, it 

should be noted that State D does have an I/M program which includes an OBD test (advisory) 

as well as a fuel cap test, so evap DTC rates in State D are likely lower than those in a non-I/M 

area. The trend line showed that for the three states with an enforced I/M program, at 4 years old 

the approximate percentage of tests with evap DTCs is 0.5%. This percentage increases to 

approximately 1.1% for 8 year old vehicles. The increase in the percentage is approximately 

0.15% per year. For state D, the trend line shows that the percentage of tests with evap DTCs for 

4 year old vehicles is approximately 1.4%, and this increases to approximately 3.5% for 8 year 

old vehicles. The increase in the percentage of tests with evap DTCs by age is approximately 

0.5%. 

State D does include an enforced gas cap test in their I/M program, so the trend line 

approximating the non-I/M area (in red) might be a conservative estimate. The trend lines show 

that for 8 year old vehicles in an I/M area, approximately 1.0% of them could have a stored evap 

DTC, while in a non-I/M area the percent of 8 year old vehicles could be over 3%. 

 As has been stated earlier, all of the predicted values are based on linear trends, and the 

data in these plots do suggest some non-linearity in the relationship. A more in-depth statistical 

analysis could be used to refine these predicted evap DTC rates by age in a future analysis. 

3.5 Evap DTCs over Multiple Inspection Cycles 

In enforced OBD programs, less than 0.5% of the vehicles with a “ready” evap monitor 

and with at least one evap DTC were found to have evap DTCs in more than one I/M cycle. This 

suggests that it may be more common for evap DTCs to periodically occur throughout the I/M 

fleet rather than be limited to a smaller number of “problem” vehicles that repeatedly have evap 

DTCs over multiple I/M cycles. However, the distribution of the fleet (in terms of the number of 

inspection cycles) will affect the percentage of vehicles with evap DTCs in more than one I/M 
36 

cycle (older vehicles which have undergone more inspection cycles will be more likely to have 

evap DTCs in more than one I/M cycle). 

3.6 Evaluation of Evap DTC rates based on the Prior I/M Cycle’s Evap Monitor 

Readiness Status 

For this analysis, the evap DTC rates for “evap ready” vehicles which had a “not ready” 

evap monitor in the previous I/M cycle were analyzed. For every state, the evap DTC rates were 

between 2% and 10% higher for vehicles that previously had a “not ready” evap monitor in 

comparison to the overall fleet. One possible explanation for this is that for some of these 

preceding tests in which the evap monitor was not ready, the vehicle’s battery had been 

disconnected prior to the test in order to extinguish the MIL and pass the I/M inspection, thus 

resetting the readiness monitors and clearing the DTCs (possibly evap DTCs) which would 

reappear during a subsequent inspection unless that problem had been properly addressed. 

Regardless of the cause, these results imply that that the actual rate of vehicles with evap DTCs 

may be higher than the DTC rate calculated based on I/M data (i.e., “not ready” evap monitors 

may be masking some evap DTCs in the I/M data), but because of the differences among the 

states and the small subsample of vehicle tests, additional analysis would be required to 

investigate this more fully. 

4.0 Most Common Evap DTCs 

The graphs in Section 3 present rates of evap DTCs without consideration of the specific 

DTC. In this section, the specific evap DTCs that were set in each state were highlighted. This 

additional analysis showed the majority of evap DTCs are limited to a small subset of codes. 

This section summarizes the most common evap codes, either set individually or in combination 

with other evap codes (e.g. codes P0442 and P0455). 

4.1 Most Common Individual Evap DTCs 

The prevalence of generic (P0) evap codes and manufacturer-specific (P1) codes were 

tabulated to identify the trends in individual DTCs (not the multiples in this case). The number of 

test records containing each of the individual evap DTCs (listed in Table 4) was summed for 

each state. This count was done by DTC, regardless of which other evap DTCs were in the same 

test record. Table 6 shows the results of the counts of each evap DTC for each of the states. 

Because records with more than one evap DTC were counted more than once, the total number 

of test records in Table 6 will exceed the total number of test records with evap DTCs. For 

example, a record with 3 evap DTCs will be listed 3 times in Table 6, once for each of the 3 

DTCs contained in the test record. 
37 

Table 6. Counts of Instances for Each Evap DTC by State 

State A State B State C State D 

Specific

P0 and P1 

Evap 

DTCs

Number 

of records % 

Number 

of records % 

Number 

of records % 

Number 

of records % 

P_093 259 0.0% 18 0.0% 5 0.0% 3 0.0%

P_094 6 0.0% 0 0.0% 2 0.0% 3 0.0%

P_440 70,351 10.6% 11,332 14.6% 13,954 15.0% 10,424 13.4%

P_441 59,423 9.0% 8,693 11.2% 10,590 11.4% 6,529 8.4%

P_442 114,294 17.3% 14,853 19.1% 16,892 18.2% 13,524 17.4%

P_443 56,553 8.5% 3,782 4.9% 5,602 6.0% 7,422 9.6%

P_444 2,132 0.3% 298 0.4% 260 0.3% 218 0.3%

P_445 1,474 0.2% 142 0.2% 160 0.2% 214 0.3%

P_446 51,523 7.8% 6,927 8.9% 9,891 10.7% 4,617 6.0%

P_447 3,880 0.6% 570 0.7% 468 0.5% 1,291 1.7%

P_448 1,833 0.3% 442 0.6% 1,578 1.7% 442 0.6%

P_449 2,582 0.4% 1,111 1.4% 385 0.4% 359 0.5%

P_450 5,480 0.8% 544 0.7% 719 0.8% 958 1.2%

P_451 1,866 0.3% 253 0.3% 345 0.4% 440 0.6%

P_452 11,723 1.8% 1,184 1.5% 591 0.6% 2,151 2.8%

P_453 2,691 0.4% 598 0.8% 322 0.3% 518 0.7%

P_454 145 0.0% 35 0.0% 11 0.0% 103 0.1%

P_455 118,694 17.9% 15,571 20.0% 18,472 19.9% 12,310 15.9%

P_456 130,312 19.7% 8,228 10.6% 8,195 8.8% 11,672 15.1%

P_457 24,079 3.6% 2,279 2.9% 4,119 4.4% 3,837 4.9%

P_458 174 0.0% 5 0.0% 9 0.0% 10 0.0%

P_459 39 0.0% 19 0.0% 8 0.0% 6 0.0%

P_465 31 0.0% 5 0.0% 1 0.0% 1 0.0%

P_466 1 0.0% 0 0.0% 0 0.0% 1 0.0%

P_467 0 0.0% 0 0.0% 0 0.0% 3 0.0%

P_468 0 0.0% 0 0.0% 0 0.0% 3 0.0%

P_469 0 0.0% 0 0.0% 0 0.0% 2 0.0%

P_496 746 0.1% 690 0.9% 173 0.2% 251 0.3%

P_497 633 0.1% 71 0.1% 34 0.0% 104 0.1%

P_498 339 0.1% 33 0.0% 24 0.0% 85 0.1%

P_499 186 0.0% 30 0.0% 21 0.0% 37 0.0%

 

Total1661,449 100% 77,713 100% 92,831 100% 77,538 100%

1 These totals are for 1996 and newer vehicles. They will be larger than the total of evap DTCs presented in 

Appendix tables C-1 through C-4 and E-1 through E-4 because some evap DTCs are set together. 
38 

From Table 6, the most common individual DTCs that were in all states combined were 

identified. These include P0 and P1 codes (shaded in gray in the table) with 440, 441, 442, 443, 

446, 447, 448, 449, 450, 452, 455, 456, and 457. The results are presented by calendar year and 

model year in Appendix D. Because the other evap DTCs were not as common, their 

distributions are not presented in Appendix D. The numbers in the Appendix D tables indicate 

that as vehicles age, the percentage of vehicles with each particular evap DTC increases slightly. 

When reviewing these results, it should be noted that different vehicle makes and models have 

different evap monitor readiness and evap DTC rates. Therefore, differences in fleet mix and 

fleet age distributions in the various states could be contributing to the differences among states. 

Also, as noted previously, environmental conditions such as ambient temperatures and elevation 

(ambient pressure) which vary from state to state may also affect evap monitor readiness and 

evap DTC rates and contribute to the differences among the state results provided in Appendix 

D. 

4.2 Most Common Individual Evap DTCs and Evap DTC Combinations 

The prevalence of generic (P0) evap codes and manufacturer-specific (P1) codes (either 

individually or in combinations) was tabulated. Less than 20 different individual and 

combinations of evap codes comprised more than 90% of all evap codes in the data. Appendix E 

contains tables showing the most common evap DTCs and evap DTC combinations for each 

state. Table 7 lists the most common evap DTCs for all 4 states combined. The DTC definitions 

are based on the generic P0 codes listed in SAEJ2012 and are listed in Table 4. The percentage 

of all codes from all states is listed in Table 7. 

Table 7. Evap DTCs Most Commonly Found in All States’ Data 

# of Evap 

codes

Specific P0 and 

P1 codes set

Generic description of DTCs 

set

Number of 

occurrences 

Percentage

of evap 

codes

Cumulative 

percentage of 

evap codes

1 P_456 

Evap system very small leak

detected 139,596 17.8% 17.8%

1 P_455 Evap system gross leak detected 128,058 16.4% 34.2%

1 P_442 Evap system small leak detected 114,606 14.6% 48.9%

1 P_440 Evap system malfunction 73,787 9.4% 58.3%

1 P_443 

Evap system purge control valve 

circuit (P0) or incorrect purge 

control valve flow (P1) 69,023 8.8% 67.1%

1 P_441 

Incorrect purge flow (P0) or 

flow during non-purge (P1) 54,533 7.0% 74.1%

1 P_446 

Evap system vent control circuit 

malfunction 40,935 5.2% 79.3%

1 P_457 Evap system leak detected (fuel 28,293 3.6% 82.9%
39 

# of Evap 

codes

Specific P0 and 

P1 codes set

Generic description of DTCs 

set

Number of 

occurrences 

Percentage

of evap 

codes

Cumulative 

percentage of 

evap codes

cap) (P0) or evap canister (P1)

2 

P_442 and 

P_455 Small leak and gross leak 19,718 2.5% 85.4%

3 

P_440, P_441, 

and P_446 

Evap system malfunction, 

incorrect purge flow or flow 

during non-purge, and vent 

control circuit malfunction 14,225 1.8% 87.3%

1 P_452 

Evap system pressure sensor 

low input 12,028 1.5% 88.8%

Multiple 

Other Evap 

DTC set as 1 or 

2 or 3 or more 

DTCs together 87,693 11.2% 100.0%

Total 782,495

Note: These results are for model years 1996 and newer 

Table 7 shows that for all the states combined, common codes primarily fall into two 

categories, leaks or purge flow. The leak codes, including P_442, P_455, P_456, and P_457, 

comprise more than 50% of the overall evap codes for vehicles of model years 1996 and newer. 

This number represents a minimum of the percent of the total evap DTCs that involve leaks, 

because the four codes listed above are only some of the codes that could indicate a leak in the 

evaporative emissions control system. Also, 50% represents the minimum percentage of evap 

DTCs that involve leaks, but the percentage of evaporative emissions resulting from these leakrelated DTCs may be higher or lower than 50% of all evaporative emissions, since emission rates 

can vary significantly based on type of failure. Some malfunctions may not result in any 

evaporative emissions release. This analysis does not attempt to quantify the emission rates from 

any specific evap DTCs, it only quantifies the rate of evap DTCs. 

The second most common category of evap DTCs in Table 7 involve some sort of error 

in the operation of the purge flow control. The codes for these DTCs include P_441 and P_443, 

and they make up approximately 15%-20% of the evap DTCs found in the data. Other types of 

evap codes include general evap malfunction (P_440), vent control circuit malfunction (P_446), 

and pressure sensor (P_450). 

The leak codes for each of the states were tabulated by calendar year and model year to 

see what percentage of the inspections with evap DTCs had leak-related evap DTCs. The 

detailed tables for leaks are also included in Appendix E. The tables show that in a given 

calendar year and model year, the percentage of the evap DTCs that are leak-related varies 
40 

significantly from the overall percentage of over 50% highlighted above. In general, however, 

the newer model years have a higher percentage of the evap DTCs being leak-related than the 

older model years. In some calendar years and model years, over 75% of the evap DTCs can be 

leak-related. This indicates that the overall percentage of 50% of the evap DTCs being leakrelated is a conservative estimate, especially if only newer model years are considered. 

5.0 Conclusions 

This report presented results from analysis of OBD evap monitor readiness status and 

OBD evaporative emissions control system DTCs as a function of calendar year and model year 

using I/M program data from four states. The main purpose of this Work Assignment was to 

better understand evap monitor readiness and evap DTC rates for light-duty gasoline cars and 

trucks. In order to standardize results among all states and minimize the effect of differences in 

how State I/M programs are administered, this analysis was performed without regarding to each 

state’s OBD readiness or OBD pass / fail determinations. Results in this report are based on the 

OBD evap monitor readiness status (without regard to the state’s I/M readiness determination) 

and the presence (or lack of) evap-related DTCs (without regard to MIL command status). 

The first part of the analysis involved determining how many vehicles had a “ready” evap 

monitor at the time of initial and/or re-test inspection within one inspection cycle. Evap monitor 

readiness was evaluated because some evap DTCs may not be set for vehicles with evap system 

malfunctions until the evap monitor achieves readiness (i.e., a “not ready” evap monitor can 

“mask” some evap system DTCs). The percentage of “not ready” evap monitors was evaluated 

and compared among each state, and that analysis showed that all states have similar evap 

monitor readiness percentages, even State D which does not perform pass/fail OBD inspections, 

they are only advisory. 

Regardless of the details of the I/M program administration or the calendar years of data 

analyzed, the results suggest that approximately 7-11% of the initial inspections in any given 

I/M program are likely to have a “not ready” evap monitor. The similarity in this percentage for 

all of the states suggests that this number could approximate a national percentage of vehicles in 

I/M programs with a “not ready” evap monitor. 

When comparing these results with previous analysis of non-evap OBD monitors, the 

percentage of “not ready” evap monitors was much higher than for other OBD monitors. For 

example, when evaluating all the OBD monitors’ status for one of these states, the non-evap 

OBD monitors had an overall “not ready” range of 1% - 2% instead of the 7%-11% range seen 

for the evap monitor. As the OBD evap monitor is typically subject to more rigorous enabling 
41 

criteria (specific vehicle operation and soak requirements) than other monitors in order to 

achieve readiness, this monitor is generally one of the last monitors to achieve readiness, and 

will likely have a higher fleet-wide “not ready” rate than other monitors at any point in time 

(such as during an I/M inspection). Due to the longer “not ready” period of the OBD evap 

monitor, it is possible that attempts to mask MIL illumination in order to pass an I/M test 

(through a battery disconnect or code clearing) or code clearing after legitimate repairs could 

contribute somewhat to the lower OBD evap monitor readiness rates seen during I/M tests. 

Further analysis indicated that vehicles in an I/M environment (including State D, which 

is advisory-only for OBD) are more likely to have a “not ready” evap monitor as they age. Linear 

trend lines6 were developed for each of the states showing the percent of inspections with a ready 

evap monitor versus vehicle age. This trend line was based on a modified dataset for each of the 

states that only included inspections of vehicles that would typically be subject to the I/M 

program at the time of their regular inspection. This involved removing inspections in which the 

vehicle was too new for the I/M inspection and also removing inspections during an “off” year in 

the biennial I/M programs. The results showed that as a vehicles age, they will be more likely to 

have a “not ready” evap monitor during an I/M cycle. The analysis was conducted by binning all 

vehicles in a given age (from 2 to 10 years old in most states). The vehicles at any given age can 

have a range of odometer values, so they may not all be in the same condition in terms of wearand-tear and mileage. 

For all four states, the trend lines showed that between 2% and 4% of the inspections of 

vehicles entering the I/M program (at about 2 years old) had a “not ready” evap monitor. The 

percentage increased to between 8% and 11% as the vehicles aged to 8 years old, and the rate of 

increase was approximately 1% per year as the vehicle ages. 

The evap DTC rates for all vehicles with “ready” evap monitors was then analyzed. The 

results indicate 0.7%-2.5% of the inspections with “ready” evap monitors have a stored evap 

DTC. The results also show that the overall percentage of inspections with a stored evap DTC is 

higher for State D (where OBD is not enforced) than for the other states where OBD is enforced. 

The percentage of inspections with evap DTCs were also analyzed by calendar year and model 

year, and trend lines7 were developed for each of the states showing the percentage of 

inspections with evap DTCs versus vehicle age. These trend lines were based on a modified 

dataset for each of the states which only included inspections of vehicles that would typically be 

subject to the I/M program at the time of their inspection (again, removing vehicles that are “too 

 

6

 Trend lines were developed using linear regression techniques. 

7

 Trend lines were developed using linear regression techniques 
42 

new” or not in their biennial test year). For the three states with an enforced I/M OBD program, 

between 0.1% and 0.5% of vehicles with “ready” evap monitors entering the I/M program (at 

about 2 years old) had an evap DTC. At 4 years old, the percentage of tests with evap DTCs 

increased to between 0.2% and 0.8% for those three states. At 8 years old, the percentage 

increased to between 0.5% and 2.2%, and the rate of increase was approximately 0.15% per year. 

The rate of increase in the percentage of evap DTCs for the fourth state, State D, was 

over 3 times higher than the rate of the other three states. For example, at 4 years old the 

percentage of tests with evap DTCs was between 1.0% and 2.0% for state D. At 8 years old, the 

percentage increased to between 2.6% and 4.2%, and the rate of increase was approximately 

0.5% per year. This higher rate of increase of the percentage of evap DTCs by age is likely due 

to the fact that OBD is not enforced in State D. It is possible that the percentage of evap DTCs 

for State D is indicative of the minimum rate of evap DTCs in a non-I/M area. The rate of 

increase in a non-I/M area could be even higher than the slope for State D, because State D does 

have an I/M program that includes an evap testing component (gas cap test). 

The percentage of evap DTCs set by calendar year and model year were combined for 

those three states (States A, B, and C) to calculate a single trend line showing the percentage of 

evap DTCs set by vehicle age. The combined State A, B, C trend line was then compared with 

the trend line for State D (in which OBD is not enforced) as a comparison of results from states 

with an enforced OBD program versus a state without an enforced OBD program. The trend 

lines show that the rate of increase of evap DTCs as the vehicles age is over 3 times higher for 

State D versus that for the states with an enforced OBD program. For example, the trend line 

showed that for the three states with an enforced I/M program, at 4 years old the approximate 

percentage of tests with evap DTCs is 0.5%. This percentage increases to approximately 1.1% 

for 8 year old vehicles. The increase in the percentage is approximately 0.15% per year. For state 

D, the trend line shows that the percentage of tests with evap DTCs for 4 year old vehicles is 

approximately 1.4%, and this increases to approximately 3.5% for 8 year old vehicles. The 

increase in the percentage of tests with evap DTCs by age is approximately 0.5%. These trend 

lines might be used as one way to approximate the rate of stored evap DTCs for vehicles in I/M 

and non-I/M areas. 

Vehicles with evap DTCs were analyzed over multiple inspection cycles, and less than 

0.5% of these vehicles were found to have evap DTCs in more than one I/M cycle. Vehicles with 

“not ready” evap monitors throughout one inspection cycle were found to have slightly higher 

evap DTC rates during the subsequent inspection cycle, suggesting that “not ready” evap 

monitors could be masking evap problems (and hence evap DTCs). However, further analysis 
43 

showed that less than 3% of the vehicles analyzed had an evap monitor status of “not ready” 

more than two times in their entire I/M history. 

Further analysis showed that the majority of evap DTCs are limited to a small subset of 

codes. The records with individual evap codes as well as multiple evap codes were analyzed, and 

the results showed that usually fewer than 20 different individual and combinations of evap 

codes comprised more than 90% of all evap codes in the data. The results show that for all the 

states combined, common codes primarily fall into two categories, leaks or purge flow. The leak 

codes, including P_442, P_455, P_456, and P_457, comprise more than 50% of the overall evap 

codes for vehicles of model years 1996 - 2010. This number represents a minimum of the 

percentage of the total evap DTCs that involve leaks, because the four codes listed above are 

only some of the codes that could indicate a leak in the evaporative emissions control system. 

This 50% represents the minimum percentage of evap DTCs that involve leaks, but the 

percentage of evaporative emissions resulting from these leak-related DTCs may be higher (or 

lower) than 50% of all evaporative emissions, since emission rates can vary significantly based 

on type of malfunction.. This analysis does not attempt to quantify the emission rates from any 

specific evap DTCs, it only quantifies the rate of evap DTCs. 

The second most common category of evap DTCs in the data involved some sort of error 

in the operation of the purge flow control. The codes for these DTCs included P_441 and P_443, 

and they made up approximately 15%-20% of the evap DTCs found in the data. 

The newest vehicles in every state are not subject to the I/M program and therefore are 

not included in this analysis. The evap monitor readiness status decreases and evap DTC rates 

increase as vehicles age. It is likely the evap monitor “not ready” rates and the evap DTC rates 

presented in this report are actually higher than those that would be seen for the entire on-road 

vehicle fleet. The newer vehicles would make up a high percentage of the fleet but would have 

lower percentages of “not ready” evap monitors and stored evap DTCs. The vehicles analyzed 

from each state for this report are all subject to an I/M program. Since the State D program is 

advisory for OBD, it was used in this report to approximate OBD evap fleet trends from a nonI/M area, but it is likely to be a “best-case” scenario (lower evap DTC rates than a non-I/M area) 

since State D does provide OBD results on an advisory basis and it does have an enforced gas 

cap test. 

For future work, data from another source (such as some commercially available database 

of on-road vehicle data monitoring) could be obtained to further develop estimates of the evap 
44 

monitor status and DTC rates for new vehicles and vehicles operating outside of I/M programs 

(as these vehicles are not currently well represented in this analysis of I/M data). 

Future work could also involve evaluation of on-road I/M pullover testing to determine 

the evap DTC and evap monitor readiness rates for in-use vehicles and compare these rates with 

the I/M rates presented in this report. Other future work could also involve performing analysis 

of DTCs and readiness of monitors associated with engine operation (i.e., exhaust emissions) and 

compare these rates with the evaporative emissions control system rates presented in this report. 
Appendix A 

Summary of Data Filters Applied the States’ Data 
A-1 

For all the states’ data, filters were applied to the data to remove any inspection records 

that should not be used for this analysis. This included inspections of heavy duty vehicles 

(vehicles with a gross vehicle weight rating (GVWR) greater than 8500 lbs), inspections of 

vehicles with a fuel type other than gasoline, invalid or unofficial test records, audits and special 

inspections performed at government-operated stations (in the states where this is applicable). 

Any records with obviously invalid VINs, such as VINs of “TEST”, “OBDTEST”, 

“OBD2TEST”, “12345”, “000” and “111”, were removed. Then any vehicle tests with a result of 

“Abort” were removed. These aborted tests do not have any valid OBD results, so they were 

removed before beginning the identification of initial tests. Also, for the purposes of this 

analysis, all vehicles 1995 and older were removed from the dataset, and records with invalid 

model years were removed. Only records where the inspection record indicated that an OBDII 

inspection had been performed (i.e., test type=OBD, OBD result=P or F, malfunction indicator 

light (MIL) status=P or F, diagnostic link connector (DLC) result=P) were kept. In addition, any 

tests where the inspection reason indicated that the record was for a safety-only inspection and 

any other tests where an OBD inspection was not required were dropped. Finally, in some states, 

a few vehicles were found to have received hundreds of inspections, often with three or more 

inspections on the same day; these appear to be audit vehicles, and since they do not represent 

actual vehicles from the I/M fleet, they were also deleted. 
Appendix B 

Tables of Percentage of Evap Monitors “Not Ready” 

by Calendar Year and Model Year for Each State 
B-1 

Table B-1. Percent of Evap Monitors Ready for All Test Cycles by Calendar Year and Mode

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 20

2004 

Ready 810,561 516,697 971,755 511,922 1,245,836 308,108 256,568 247,453 143,357 7,887 6 . 

Total 843,246 569,106 1,065,028 583,806 1,343,798 359,696 284,912 268,590 154,769 8,863 6 . % Rdy 96.1% 90.8% 91.2% 87.7% 92.7% 85.7% 90.1% 92.1% 92.6% 89.0% 100.0% . 

2005 

Ready 432,051 842,942 501,595 1,040,290 296,247 243,609 118,992 79,784 77,762 51,387 2,688 

Total 456,604 917,775 572,812 1,150,154 349,579 290,644 138,695 91,474 85,050 55,153 3,071 % Rdy 94.6% 91.8% 87.6% 90.4% 84.7% 83.8% 85.8% 87.2% 91.4% 93.2% 87.5% 100

2006 

Ready 667,343 499,630 836,110 518,456 1,350,221 259,989 229,412 99,549 68,995 75,619 45,474 3,

Total 699,816 557,066 937,095 602,608 1,481,334 306,798 268,900 117,918 77,522 80,950 48,352 3,% Rdy 95.4% 89.7% 89.2% 86.0% 91.1% 84.7% 85.3% 84.4% 89.0% 93.4% 94.0% 91

2007 

Ready 387,300 704,889 478,407 893,653 442,636 1,314,166 239,320 215,297 87,833 64,136 68,348 40,

Total 411,795 775,171 557,093 1,012,319 518,372 1,439,185 277,118 254,939 100,926 69,741 71,905 41,% Rdy 94.1% 90.9% 85.9% 88.3% 85.4% 91.3% 86.4% 84.5% 87.0% 92.0% 95.1% 97

2008 

Ready 540,399 439,432 695,175 484,571 1,140,170 409,179 1,290,781 208,776 182,380 77,783 58,321 58,

Total 571,533 495,384 794,806 576,994 1,280,294 478,032 1,395,503 245,367 212,833 87,004 62,259 60,% Rdy 94.6% 88.7% 87.5% 84.0% 89.1% 85.6% 92.5% 85.1% 85.7% 89.4% 93.7% 97

2009 

Ready 348,025 600,445 432,646 769,712 452,706 1,147,469 380,440 1,308,578 188,646 167,453 78,192 55,

Total 374,438 672,594 519,581 896,492 546,853 1,287,831 440,307 1,430,133 216,017 189,553 84,929 57,% Rdy 92.9% 89.3% 83.3% 85.9% 82.8% 89.1% 86.4% 91.5% 87.3% 88.3% 92.1% 96

2010 

Ready 463,884 409,166 611,897 469,722 1,012,825 462,347 1,193,482 388,749 1,355,367 218,014 196,057 95,

Total 497,470 470,704 723,119 573,883 1,168,494 540,824 1,305,366 447,463 1,437,297 236,415 209,837 98,% Rdy 93.2% 86.9% 84.6% 81.8% 86.7% 85.5% 91.4% 86.9% 94.3% 92.2% 93.4% 96
B-2 

Table B-2. Percent of Evap Monitors Ready for All Test by Calendar Year and Model Ye

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2007 

Ready 86,221 104,473 120,599 141,773 162,736 160,655 175,040 176,875 187,828 270 33 . 

Total 92,393 116,055 134,549 158,861 177,411 171,512 183,683 185,345 193,633 278 34 . % Rdy 93.3% 90.0% 89.6% 89.2% 91.7% 93.7% 95.3% 95.4% 97.0% 97.1% 97.1% . 

2008 

Ready 75,210 91,437 105,053 129,595 151,430 151,741 166,816 167,678 176,481 182,274 224 62 

Total 81,152 102,586 118,560 147,513 167,685 163,693 176,643 177,429 183,862 187,140 233 62 % Rdy 92.7% 89.1% 88.6% 87.9% 90.3% 92.7% 94.4% 94.5% 96.0% 97.4% 96.1% 100.0% 

2009 

Ready 66,540 82,052 94,083 116,227 140,870 143,391 159,370 161,291 168,772 169,544 177,769 446 

Total 72,254 92,787 108,001 133,492 158,056 156,054 170,134 172,242 176,856 175,578 184,345 462 % Rdy 92.1% 88.4% 87.1% 87.1% 89.1% 91.9% 93.7% 93.6% 95.4% 96.6% 96.4% 96.5% 

2010 

Ready 59,887 74,645 85,547 105,528 128,581 135,363 152,925 157,135 165,719 165,354 169,173 185,562 

Total 65,892 85,700 100,570 124,532 147,635 150,186 166,319 170,870 176,021 172,606 176,778 192,526 % Rdy 90.9% 87.1% 85.1% 84.7% 87.1% 90.1% 91.9% 92.0% 94.1% 95.8% 95.7% 96.4% 

2011 

Ready 52,826 67,607 77,743 96,822 118,358 125,100 146,159 151,629 161,859 163,129 166,142 174,090 

Total 58,355 77,871 92,173 115,492 137,645 140,163 160,202 166,714 173,623 171,830 174,540 181,088 % Rdy 90.5% 86.8% 84.3% 83.8% 86.0% 89.3% 91.2% 91.0% 93.2% 94.9% 95.2% 96.1% 

2012 

Ready 46,544 60,051 69,510 87,437 108,562 115,802 135,902 145,333 156,673 159,423 163,487 170,765 

Total 51,500 69,714 83,619 105,800 128,104 130,894 150,831 161,629 169,775 169,488 173,303 178,223 % Rdy 90.4% 86.1% 83.1% 82.6% 84.7% 88.5% 90.1% 89.9% 92.3% 94.1% 94.3% 95.8% 
B-3 

Table B-3. Percent of Evap Monitors Ready for All Test Cycles by Calendar Year and Mode

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2005 

Ready 75,983 175,748 109,776 210,126 149,671 257,887 133,550 46,229 24,040 10,583 334 . 

Total 80,645 191,168 120,910 226,857 159,826 268,365 137,436 47,689 24,815 11,092 435 . % Rdy 94.2% 91.9% 90.8% 92.6% 93.6% 96.1% 97.2% 96.9% 96.9% 95.4% 76.8% . 

2006 

Ready 123,740 75,286 160,245 107,288 224,672 127,510 274,461 114,192 31,183 20,469 12,954 491 

Total 130,324 84,484 176,005 118,975 240,740 135,125 282,929 117,823 32,149 21,030 14,276 558 % Rdy 94.9% 89.1% 91.0% 90.2% 93.3% 94.4% 97.0% 96.9% 97.0% 97.3% 90.7% 88.0% 

2007 

Ready 64,117 139,445 94,372 175,277 135,525 222,527 144,704 286,939 110,806 34,310 26,882 12,122 

Total 69,537 156,425 108,822 196,377 149,742 238,339 152,596 297,433 114,085 35,415 27,828 12,665 % Rdy 92.2% 89.1% 86.7% 89.3% 90.5% 93.4% 94.8% 96.5% 97.1% 96.9% 96.6% 95.7% 

2008 

Ready 86,214 59,396 118,266 86,064 178,528 111,461 225,227 117,687 242,347 96,650 31,588 24,386 

Total 93,066 69,862 136,502 101,139 199,215 123,222 239,296 124,793 250,175 99,405 32,726 24,995 % Rdy 92.6% 85.0% 86.6% 85.1% 89.6% 90.5% 94.1% 94.3% 96.9% 97.2% 96.5% 97.6% 

2009 

Ready 40,797 89,350 62,188 119,328 96,311 164,854 114,012 219,130 109,265 223,890 94,323 31,377 

Total 45,251 103,153 75,843 139,321 111,502 181,567 123,824 233,231 114,515 229,713 97,232 32,266 % Rdy 90.2% 86.6% 82.0% 85.6% 86.4% 90.8% 92.1% 94.0% 95.4% 97.5% 97.0% 97.2% 

2010 

Ready 8,874 8,668 12,595 10,866 21,822 13,487 29,721 15,601 33,661 12,563 32,270 5,270 

Total 9,847 10,519 15,526 13,852 25,661 15,681 32,487 17,384 35,796 13,189 33,508 5,451 % Rdy 90.1% 82.4% 81.1% 78.4% 85.0% 86.0% 91.5% 89.7% 94.0% 95.3% 96.3% 96.7% 
B-4 

Table B-4. Percent of Evap Monitors Ready for All Test Cycles by Calendar Year and Mode

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 200

2004 

Ready 39,980 36,292 49,093 34,875 59,763 27,702 18,151 12,524 7,131 135 . . . Total 42,471 39,731 52,633 37,708 63,151 29,855 19,137 13,408 7,670 152 . . . % Rdy 94.1% 91.3% 93.3% 92.5% 94.6% 92.8% 94.8% 93.4% 93.0% 88.8% . . . 

2005 

Ready 24,512 33,229 28,801 38,007 30,625 44,354 21,698 10,902 8,631 4,124 59 . . Total 26,678 36,714 32,033 41,295 33,510 47,369 23,378 11,642 9,321 4,512 74 . . % Rdy 91.9% 90.5% 89.9% 92.0% 91.4% 93.6% 92.8% 93.6% 92.6% 91.4% 79.7% . . 

2006 

Ready 27,920 29,204 38,540 32,057 47,915 30,771 56,159 18,290 9,471 8,091 3,326 82 . Total 29,873 32,272 42,181 35,136 51,254 33,092 58,458 19,439 9,997 8,603 3,626 97 . % Rdy 93.5% 90.5% 91.4% 91.2% 93.5% 93.0% 96.1% 94.1% 94.7% 94.0% 91.7% 84.5% . 

2007 

Ready 20,569 28,735 27,859 35,803 31,537 40,804 29,411 47,946 15,368 7,587 5,707 2,636 Total 22,336 31,926 31,216 39,316 34,721 43,896 31,588 50,311 16,490 8,099 6,153 2,873 % Rdy 92.1% 90.0% 89.2% 91.1% 90.8% 93.0% 93.1% 95.3% 93.2% 93.7% 92.8% 91.8% 93.7

2008 

Ready 20,393 21,900 27,664 25,105 34,333 25,433 37,983 21,320 43,360 11,950 5,768 5,075 1,8Total 22,253 24,887 31,299 28,486 37,938 28,314 40,718 23,111 45,423 13,135 6,280 5,457 1,9% Rdy 91.6% 88.0% 88.4% 88.1% 90.5% 89.8% 93.3% 92.3% 95.5% 91.0% 91.8% 93.0% 93.7

2009 

Ready 19,979 27,398 26,041 32,468 30,261 37,899 29,272 40,594 22,314 48,482 11,162 5,362 4,4Total 22,082 31,150 30,159 36,750 34,254 41,752 32,219 43,262 23,898 50,697 12,279 5,789 4,7% Rdy 90.5% 88.0% 86.3% 88.3% 88.3% 90.8% 90.9% 93.8% 93.4% 95.6% 90.9% 92.6% 94.3

2010 

Ready 23,198 25,460 31,671 29,009 39,278 31,098 43,194 27,237 42,972 23,179 47,335 11,499 5,4Total 25,775 29,737 36,863 33,923 44,488 35,661 47,451 30,177 45,642 25,003 49,648 12,608 5,7% Rdy 90.0% 85.6% 85.9% 85.5% 88.3% 87.2% 91.0% 90.3% 94.2% 92.7% 95.3% 91.2% 94.0

2011 

Ready 21,199 34,395 29,383 41,656 35,198 47,302 35,131 49,151 29,687 54,786 31,436 57,766 12,4Total 23,851 39,910 35,151 48,481 41,239 53,693 39,921 53,803 32,541 58,150 33,769 60,315 13,5% Rdy 88.9% 86.2% 83.6% 85.9% 85.4% 88.1% 88.0% 91.4% 91.2% 94.2% 93.1% 95.8% 91.6
Appendix C 

Tables of Percentage of Evap DTCs Set by Calendar Year 

and Model Year for Each State 
C-1 

Table C-1. For All Test Cycles with Evap Monitor Ready: Percent with One or More Evap DTCs Set, by 

Model Year: State A 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2

2004 

Yes 10,678 7,638 11,756 6,140 13,535 2,969 2,059 1,420 525 8 0 . 

Total Rdys 810,561 516,697 971,755 511,922 1,245,836 308,108 256,568 247,453 143,357 7,887 6 . %w/DTC 1.3% 1.5% 1.2% 1.2% 1.1% 1.0% 0.8% 0.6% 0.4% 0.1% 0.0% . 

2005 

Yes 7,171 12,636 8,092 12,960 3,330 2,740 1,210 684 414 111 1 

Total Rdys 432,051 842,942 501,595 1,040,290 296,247 243,609 118,992 79,784 77,762 51,387 2,688 %w/DTC 1.7% 1.5% 1.6% 1.2% 1.1% 1.1% 1.0% 0.9% 0.5% 0.2% 0.0% 0

2006 

Yes 9,495 9,452 12,756 7,921 19,312 3,361 2,591 907 490 306 45 

Total Rdys 667,343 499,630 836,110 518,456 1,350,221 259,989 229,412 99,549 68,995 75,619 45,474 3%w/DTC 1.4% 1.9% 1.5% 1.5% 1.4% 1.3% 1.1% 0.9% 0.7% 0.4% 0.1% 0

2007 

Yes 6,646 12,175 9,418 12,776 7,979 23,780 3,032 1,985 674 315 91 

Total Rdys 387,300 704,889 478,407 893,653 442,636 1,314,166 239,320 215,297 87,833 64,136 68,348 40%w/DTC 1.7% 1.7% 2.0% 1.4% 1.8% 1.8% 1.3% 0.9% 0.8% 0.5% 0.1% 0

2008 

Yes 8,044 9,283 12,580 8,688 19,051 9,362 24,685 2,541 1,593 409 138 

Total Rdys 540,399 439,432 695,175 484,571 1,140,170 409,179 1,290,781 208,776 182,380 77,783 58,321 58%w/DTC 1.5% 2.1% 1.8% 1.8% 1.7% 2.3% 1.9% 1.2% 0.9% 0.5% 0.2% 0

2009 

Yes 6,176 11,455 10,028 13,022 9,712 23,820 9,137 24,073 2,001 926 205 

Total Rdys 348,025 600,445 432,646 769,712 452,706 1,147,469 380,440 1,308,578 188,646 167,453 78,192 55%w/DTC 1.8% 1.9% 2.3% 1.7% 2.1% 2.1% 2.4% 1.8% 1.1% 0.6% 0.3% 0

2010 

Yes 6,947 8,724 12,680 9,490 18,935 11,436 26,169 8,076 20,839 1,376 498 

Total Rdys 463,884 409,166 611,897 469,722 1,012,825 462,347 1,193,482 388,749 1,355,367 218,014 196,057 95%w/DTC 1.5% 2.1% 2.1% 2.0% 1.9% 2.5% 2.2% 2.1% 1.5% 0.6% 0.3% 0
C-2 

Table C-2. For All Test Cycles with Evap Monitor Ready: Percent with One or More Evap DTCs Set, by 

Model Year: State B 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2007 

Yes 825 993 908 716 809 943 946 730 365 0 0 0 

Total Rdys 86,221 104,473 120,599 141,773 162,736 160,655 175,040 176,875 187,828 270 33 1 %w/DTC 1.0% 1.0% 0.8% 0.5% 0.5% 0.6% 0.5% 0.4% 0.2% 0.0% 0.0% 0.0% 

2008 

Yes 749 992 981 875 990 1,201 1,266 963 502 265 0 0 

Total Rdys 75,210 91,437 105,053 129,595 151,430 151,741 166,816 167,678 176,481 182,274 224 62 %w/DTC 1.0% 1.1% 0.9% 0.7% 0.7% 0.8% 0.8% 0.6% 0.3% 0.1% 0.0% 0.0% 

2009 

Yes 699 982 965 912 1,022 1,382 1,530 1,264 759 395 286 0 

Total Rdys 66,540 82,052 94,083 116,227 140,870 143,391 159,370 161,291 168,772 169,544 177,769 446 %w/DTC 1.1% 1.2% 1.0% 0.8% 0.7% 1.0% 1.0% 0.8% 0.4% 0.2% 0.2% 0.0% 

2010 

Yes 707 1,021 1,018 929 1,036 1,438 1,485 1,353 899 539 455 295 

Total Rdys 59,887 74,645 85,547 105,528 128,581 135,363 152,925 157,135 165,719 165,354 169,173 185,562 %w/DTC 1.2% 1.4% 1.2% 0.9% 0.8% 1.1% 1.0% 0.9% 0.5% 0.3% 0.3% 0.2% 

2011 

Yes 647 963 974 942 983 1,353 1,499 1,301 892 631 542 414 

Total Rdys 52,826 67,607 77,743 96,822 118,358 125,100 146,159 151,629 161,859 163,129 166,142 174,090 %w/DTC 1.2% 1.4% 1.3% 1.0% 0.8% 1.1% 1.0% 0.9% 0.6% 0.4% 0.3% 0.2% 

2012 

Yes 583 876 954 910 1,072 1,357 1,487 1,388 953 707 652 492 

Total Rdys 46,544 60,051 69,510 87,437 108,562 115,802 135,902 145,333 156,673 159,423 163,487 170,765 %w/DTC 1.3% 1.5% 1.4% 1.0% 1.0% 1.2% 1.1% 1.0% 0.6% 0.4% 0.4% 0.3% 
C-3 

Table C-3. For All Test Cycles with Evap Monitor Ready: Percent with One or More Evap DTCs Set, by 

Model Year: State C 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 200

2005 

Yes 1,252 2,554 1,555 1,446 837 1,962 614 162 34 14 0 . 

Total Rdys 75,983 175,748 109,776 210,126 149,671 257,887 133,550 46,229 24,040 10,583 334 . %w/DTC 1.6% 1.5% 1.4% 0.7% 0.6% 0.8% 0.5% 0.4% 0.1% 0.1% 0.0% . 

2006 

Yes 1,538 1,688 2,197 1,126 1,677 1,321 2,287 566 108 23 16 

Total Rdys 123,740 75,286 160,245 107,288 224,672 127,510 274,461 114,192 31,183 20,469 12,954 4%w/DTC 1.2% 2.2% 1.4% 1.0% 0.7% 1.0% 0.8% 0.5% 0.3% 0.1% 0.1% 0.

2007 

Yes 1,073 2,260 1,858 1,943 1,431 2,729 1,580 2,044 407 75 27 

Total Rdys 64,117 139,445 94,372 175,277 135,525 222,527 144,704 286,939 110,806 34,310 26,882 12,%w/DTC 1.7% 1.6% 2.0% 1.1% 1.1% 1.2% 1.1% 0.7% 0.4% 0.2% 0.1% 0.

2008 

Yes 1,224 1,403 2,035 1,415 2,072 1,735 3,203 1,348 1,120 211 53 

Total Rdys 86,214 59,396 118,266 86,064 178,528 111,461 225,227 117,687 242,347 96,650 31,588 24,3%w/DTC 1.4% 2.4% 1.7% 1.6% 1.2% 1.6% 1.4% 1.1% 0.5% 0.2% 0.2% 0.

2009 

Yes 688 1,587 1,424 1,749 1,331 2,445 1,754 2,597 737 615 182 

Total Rdys 40,797 89,350 62,188 119,328 96,311 164,854 114,012 219,130 109,265 223,890 94,323 31,3%w/DTC 1.7% 1.8% 2.3% 1.5% 1.4% 1.5% 1.5% 1.2% 0.7% 0.3% 0.2% 0.

2010 

Yes 82 147 168 180 238 257 360 214 180 53 65 

Total Rdys 8,874 8,668 12,595 10,866 21,822 13,487 29,721 15,601 33,661 12,563 32,270 5,2%w/DTC 0.9% 1.7% 1.3% 1.7% 1.1% 1.9% 1.2% 1.4% 0.5% 0.4% 0.2% 0.
C-4 

Table C-4. For All Test Cycles with Evap Monitor Ready: Percent with One or More Evap DTCs Set, by 

Model Year: State D 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2004 

Yes 744 767 584 403 625 349 198 57 25 0 . . 

Total Rdys 39,980 36,292 49,093 34,875 59,763 27,702 18,151 12,524 7,131 135 . . %w/DTC 1.9% 2.1% 1.2% 1.2% 1.0% 1.3% 1.1% 0.5% 0.4% 0.0% . . 

2005 

Yes 601 827 520 517 436 654 292 108 46 13 0 . 

Total Rdys 24,512 33,229 28,801 38,007 30,625 44,354 21,698 10,902 8,631 4,124 59 . %w/DTC 2.5% 2.5% 1.8% 1.4% 1.4% 1.5% 1.3% 1.0% 0.5% 0.3% 0.0% 0 

2006 

Yes 736 986 807 580 825 708 1,102 233 111 46 8 2 

Total Rdys 27,920 29,204 38,540 32,057 47,915 30,771 56,159 18,290 9,471 8,091 3,326 82 %w/DTC 2.6% 3.4% 2.1% 1.8% 1.7% 2.3% 2.0% 1.3% 1.2% 0.6% 0.2% 2.4% 

2007 

Yes 729 1,020 752 693 764 999 828 822 229 61 29 9 

Total Rdys 20,569 28,735 27,859 35,803 31,537 40,804 29,411 47,946 15,368 7,587 5,707 2,636 %w/DTC 3.5% 3.5% 2.7% 1.9% 2.4% 2.4% 2.8% 1.7% 1.5% 0.8% 0.5% 0.3% 

2008 

Yes 739 1,008 834 621 860 848 1,085 487 762 129 44 33 

Total Rdys 20,393 21,900 27,664 25,105 34,333 25,433 37,983 21,320 43,360 11,950 5,768 5,075 %w/DTC 3.6% 4.6% 3.0% 2.5% 2.5% 3.3% 2.9% 2.3% 1.8% 1.1% 0.8% 0.7% 

2009 

Yes 796 1,254 985 943 962 1,222 1,192 998 498 591 100 43 

Total Rdys 19,979 27,398 26,041 32,468 30,261 37,899 29,272 40,594 22,314 48,482 11,162 5,362 %w/DTC 4.0% 4.6% 3.8% 2.9% 3.2% 3.2% 4.1% 2.5% 2.2% 1.2% 0.9% 0.8% 

2010 

Yes 1,004 1,474 1,282 1,030 1,280 1,376 1,777 907 1,090 423 475 95 

Total Rdys 23,198 25,460 31,671 29,009 39,278 31,098 43,194 27,237 42,972 23,179 47,335 11,499 %w/DTC 4.3% 5.8% 4.0% 3.6% 3.3% 4.4% 4.1% 3.3% 2.5% 1.8% 1.0% 0.8% 

2011 

Yes 1,066 2,094 1,420 1,499 1,342 2,183 1,975 1,825 946 916 450 440 

Total Rdys 21,199 34,395 29,383 41,656 35,198 47,302 35,131 49,151 29,687 54,786 31,436 57,766 %w/DTC 5.0% 6.1% 4.8% 3.6% 3.8% 4.6% 5.6% 3.7% 3.2% 1.7% 1.4% 0.8% 
Appendix D 

Tables of Individual DTCs Set by Calendar Year and Model Year for Some 

Common Evap DTCs 
D-1 

Table D-1. Number of Inspection Cycles with DTC 440 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 20

2004 

Year 952 865 1,549 916 1,483 194 125 76 11 0 0 . 

Total 810,561 516,697 971,755 511,922 1,245,836 308,108 256,568 247,453 143,357 7,887 6 . %w/DTC 0.1% 0.2% 0.2% 0.2% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2005 

Year 822 1,440 1,184 1,966 339 241 79 56 5 0 0 

Total 432,051 842,942 501,595 1,040,290 296,247 243,609 118,992 79,784 77,762 51,387 2,688 %w/DTC 0.2% 0.2% 0.2% 0.2% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0

2006 

Year 1,084 1,174 1,862 1,189 2,487 301 175 70 16 1 0 

Total 667,343 499,630 836,110 518,456 1,350,221 259,989 229,412 99,549 68,995 75,619 45,474 3,%w/DTC 0.2% 0.2% 0.2% 0.2% 0.2% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0

2007 

Year 836 1,504 1,416 1,876 1,082 2,921 265 155 26 1 0 

Total 387,300 704,889 478,407 893,653 442,636 1,314,166 239,320 215,297 87,833 64,136 68,348 40,%w/DTC 0.2% 0.2% 0.3% 0.2% 0.2% 0.2% 0.1% 0.1% 0.0% 0.0% 0.0% 0

2008 

Year 982 1,166 1,821 1,290 2,599 1,259 2,644 219 46 0 0 

Total 540,399 439,432 695,175 484,571 1,140,170 409,179 1,290,781 208,776 182,380 77,783 58,321 58,%w/DTC 0.2% 0.3% 0.3% 0.3% 0.2% 0.3% 0.2% 0.1% 0.0% 0.0% 0.0% 0

2009 

Year 735 1,353 1,467 1,788 1,403 3,208 1,134 2,426 72 8 1 

Total 348,025 600,445 432,646 769,712 452,706 1,147,469 380,440 1,308,578 188,646 167,453 78,192 55,%w/DTC 0.2% 0.2% 0.3% 0.2% 0.3% 0.3% 0.3% 0.2% 0.0% 0.0% 0.0% 0

2010 

Year 818 1,042 1,708 1,387 2,711 1,519 2,980 900 904 9 4 

Total 463,884 409,166 611,897 469,722 1,012,825 462,347 1,193,482 388,749 1,355,367 218,014 196,057 95,%w/DTC 0.2% 0.3% 0.3% 0.3% 0.3% 0.3% 0.2% 0.2% 0.1% 0.0% 0.0% 0
D-2 

Table D-2. Number of Inspection Cycles with DTC 441 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 20

2004 

Year 1,768 841 504 490 979 131 100 98 52 0 0 . 

Total 810,561 516,697 971,755 511,922 1,245,836 308,108 256,568 247,453 143,357 7,887 6 . %w/DTC 0.2% 0.2% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2005 

Year 1,472 1,453 383 805 300 169 66 84 39 9 0 

Total 432,051 842,942 501,595 1,040,290 296,247 243,609 118,992 79,784 77,762 51,387 2,688 %w/DTC 0.3% 0.2% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0

2006 

Year 1,961 1,219 581 613 1,555 189 134 101 53 22 2 

Total 667,343 499,630 836,110 518,456 1,350,221 259,989 229,412 99,549 68,995 75,619 45,474 3,%w/DTC 0.3% 0.2% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0

2007 

Year 1,553 1,680 499 848 721 1,704 223 264 48 18 11 

Total 387,300 704,889 478,407 893,653 442,636 1,314,166 239,320 215,297 87,833 64,136 68,348 40,%w/DTC 0.4% 0.2% 0.1% 0.1% 0.2% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0

2008 

Year 1,897 1,350 580 698 1,586 695 2,139 330 150 30 13 

Total 540,399 439,432 695,175 484,571 1,140,170 409,179 1,290,781 208,776 182,380 77,783 58,321 58,%w/DTC 0.4% 0.3% 0.1% 0.1% 0.1% 0.2% 0.2% 0.2% 0.1% 0.0% 0.0% 0

2009 

Year 1,540 1,734 517 877 883 1,938 900 3,826 219 82 19 

Total 348,025 600,445 432,646 769,712 452,706 1,147,469 380,440 1,308,578 188,646 167,453 78,192 55,%w/DTC 0.4% 0.3% 0.1% 0.1% 0.2% 0.2% 0.2% 0.3% 0.1% 0.0% 0.0% 0

2010 

Year 1,677 1,333 599 740 1,734 920 2,378 1,458 2,683 100 41 

Total 463,884 409,166 611,897 469,722 1,012,825 462,347 1,193,482 388,749 1,355,367 218,014 196,057 95,%w/DTC 0.4% 0.3% 0.1% 0.2% 0.2% 0.2% 0.2% 0.4% 0.2% 0.0% 0.0% 0
D-3 

Table D-3. Number of Inspection Cycles with DTC 442 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 20

2004 

Year 516 1,002 2,047 898 2,593 454 292 335 155 4 0 . 

Total 810,561 516,697 971,755 511,922 1,245,836 308,108 256,568 247,453 143,357 7,887 6 . %w/DTC 0.1% 0.2% 0.2% 0.2% 0.2% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% . 

2005 

Year 333 1,533 1,507 1,780 861 524 180 141 104 7 0 

Total 432,051 842,942 501,595 1,040,290 296,247 243,609 118,992 79,784 77,762 51,387 2,688 %w/DTC 0.1% 0.2% 0.3% 0.2% 0.3% 0.2% 0.2% 0.2% 0.1% 0.0% 0.0% 0

2006 

Year 522 1,134 2,268 1,276 5,257 632 442 206 115 30 3 

Total 667,343 499,630 836,110 518,456 1,350,221 259,989 229,412 99,549 68,995 75,619 45,474 3,%w/DTC 0.1% 0.2% 0.3% 0.2% 0.4% 0.2% 0.2% 0.2% 0.2% 0.0% 0.0% 0

2007 

Year 361 1,471 1,654 1,883 2,319 5,282 584 538 150 42 6 

Total 387,300 704,889 478,407 893,653 442,636 1,314,166 239,320 215,297 87,833 64,136 68,348 40,%w/DTC 0.1% 0.2% 0.3% 0.2% 0.5% 0.4% 0.2% 0.2% 0.2% 0.1% 0.0% 0

2008 

Year 384 1,145 2,283 1,440 5,635 2,282 5,505 699 321 56 10 

Total 540,399 439,432 695,175 484,571 1,140,170 409,179 1,290,781 208,776 182,380 77,783 58,321 58,%w/DTC 0.1% 0.3% 0.3% 0.3% 0.5% 0.6% 0.4% 0.3% 0.2% 0.1% 0.0% 0

2009 

Year 337 1,367 1,918 2,120 2,787 5,418 2,329 8,096 481 124 24 

Total 348,025 600,445 432,646 769,712 452,706 1,147,469 380,440 1,308,578 188,646 167,453 78,192 55,%w/DTC 0.1% 0.2% 0.4% 0.3% 0.6% 0.5% 0.6% 0.6% 0.3% 0.1% 0.0% 0

2010 

Year 392 1,140 2,473 1,637 5,261 2,750 6,106 2,614 5,468 181 45 

Total 463,884 409,166 611,897 469,722 1,012,825 462,347 1,193,482 388,749 1,355,367 218,014 196,057 95,%w/DTC 0.1% 0.3% 0.4% 0.3% 0.5% 0.6% 0.5% 0.7% 0.4% 0.1% 0.0% 0
D-4 

Table D-4. Number of Inspection Cycles with DTC 443 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 20

2004 

Year 6,323 2,551 228 77 168 50 20 13 1 . . . 

Total 810,561 516,697 971,755 511,922 1,245,836 308,108 256,568 247,453 143,357 7,887 6 . %w/DTC 0.8% 0.5% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2005 

Year 3,776 4,505 188 161 64 41 13 7 4 1 . . 

Total 432,051 842,942 501,595 1,040,290 296,247 243,609 118,992 79,784 77,762 51,387 2,688 %w/DTC 0.9% 0.5% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2006 

Year 4,769 3,052 246 115 264 52 16 7 1 3 . . 

Total 667,343 499,630 836,110 518,456 1,350,221 259,989 229,412 99,549 68,995 75,619 45,474 3,%w/DTC 0.7% 0.6% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2007 

Year 3,021 3,926 237 200 154 343 32 24 2 3 1 . 

Total 387,300 704,889 478,407 893,653 442,636 1,314,166 239,320 215,297 87,833 64,136 68,348 40,%w/DTC 0.8% 0.6% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2008 

Year 3,568 2,820 271 152 317 132 178 22 14 1 1 . 

Total 540,399 439,432 695,175 484,571 1,140,170 409,179 1,290,781 208,776 182,380 77,783 58,321 58,%w/DTC 0.7% 0.6% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2009 

Year 2,597 3,494 280 240 179 402 113 219 13 9 . . 

Total 348,025 600,445 432,646 769,712 452,706 1,147,469 380,440 1,308,578 188,646 167,453 78,192 55,%w/DTC 0.7% 0.6% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2010 

Year 2,903 2,478 265 193 329 198 292 103 102 6 1 

Total 463,884 409,166 611,897 469,722 1,012,825 462,347 1,193,482 388,749 1,355,367 218,014 196,057 95,%w/DTC 0.6% 0.6% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0
D-5 

Table D-5. Number of Inspection Cycles with DTC 446 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 20

2004 

Year 423 583 762 484 746 188 130 132 50 0 0 . 

Total 810,561 516,697 971,755 511,922 1,245,836 308,108 256,568 247,453 143,357 7,887 6 . %w/DTC 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% . 

2005 

Year 341 876 617 1,250 178 228 75 71 61 2 0 

Total 432,051 842,942 501,595 1,040,290 296,247 243,609 118,992 79,784 77,762 51,387 2,688 %w/DTC 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0

2006 

Year 544 784 1,051 748 1,369 281 161 69 63 7 6 

Total 667,343 499,630 836,110 518,456 1,350,221 259,989 229,412 99,549 68,995 75,619 45,474 3,%w/DTC 0.1% 0.2% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0

2007 

Year 412 1,023 831 1,461 702 2,265 218 174 55 11 4 

Total 387,300 704,889 478,407 893,653 442,636 1,314,166 239,320 215,297 87,833 64,136 68,348 40,%w/DTC 0.1% 0.1% 0.2% 0.2% 0.2% 0.2% 0.1% 0.1% 0.1% 0.0% 0.0% 0

2008 

Year 569 841 1,118 1,088 1,490 936 1,963 237 164 10 6 

Total 540,399 439,432 695,175 484,571 1,140,170 409,179 1,290,781 208,776 182,380 77,783 58,321 58,%w/DTC 0.1% 0.2% 0.2% 0.2% 0.1% 0.2% 0.2% 0.1% 0.1% 0.0% 0.0% 0

2009 

Year 406 1,154 1,011 1,784 874 2,613 835 2,550 216 56 9 

Total 348,025 600,445 432,646 769,712 452,706 1,147,469 380,440 1,308,578 188,646 167,453 78,192 55,%w/DTC 0.1% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.1% 0.0% 0.0% 0

2010 

Year 499 836 1,276 1,324 1,741 1,161 2,201 757 2,228 100 26 

Total 463,884 409,166 611,897 469,722 1,012,825 462,347 1,193,482 388,749 1,355,367 218,014 196,057 95,%w/DTC 0.1% 0.2% 0.2% 0.3% 0.2% 0.3% 0.2% 0.2% 0.2% 0.0% 0.0% 0
D-6 

Table D-6. Number of Inspection Cycles with DTC 447 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 20

2004 

Year 109 132 29 4 10 5 3 3 2 0 0 . 

Total 810,561 516,697 971,755 511,922 1,245,836 308,108 256,568 247,453 143,357 7,887 6 . %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2005 

Year 121 230 23 24 3 7 1 . 1 1 0 

Total 432,051 842,942 501,595 1,040,290 296,247 243,609 118,992 79,784 77,762 51,387 2,688 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2006 

Year 139 282 54 9 18 10 2 3 5 0 0 

Total 667,343 499,630 836,110 518,456 1,350,221 259,989 229,412 99,549 68,995 75,619 45,474 3,%w/DTC 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2007 

Year 140 354 39 24 11 26 3 4 2 0 0 

Total 387,300 704,889 478,407 893,653 442,636 1,314,166 239,320 215,297 87,833 64,136 68,348 40,%w/DTC 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2008 

Year 186 308 55 18 24 12 20 3 6 1 2 

Total 540,399 439,432 695,175 484,571 1,140,170 409,179 1,290,781 208,776 182,380 77,783 58,321 58,%w/DTC 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2009 

Year 173 365 46 31 15 38 11 10 3 3 1 

Total 348,025 600,445 432,646 769,712 452,706 1,147,469 380,440 1,308,578 188,646 167,453 78,192 55,%w/DTC 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2010 

Year 192 346 51 26 13 15 14 9 37 7 2 

Total 463,884 409,166 611,897 469,722 1,012,825 462,347 1,193,482 388,749 1,355,367 218,014 196,057 95,%w/DTC 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0
D-7 

Table D-7. Number of Inspection Cycles with DTC 448 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 20

2004 

Year 1 10 109 22 35 8 4 0 0 0 0 . 

Total 810,561 516,697 971,755 511,922 1,245,836 308,108 256,568 247,453 143,357 7,887 6 . %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2005 

Year 3 4 94 41 5 2 4 1 0 1 0 

Total 432,051 842,942 501,595 1,040,290 296,247 243,609 118,992 79,784 77,762 51,387 2,688 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2006 

Year 3 10 151 41 42 8 6 1 0 0 0 

Total 667,343 499,630 836,110 518,456 1,350,221 259,989 229,412 99,549 68,995 75,619 45,474 3,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2007 

Year 1 6 117 59 25 46 4 1 0 1 1 

Total 387,300 704,889 478,407 893,653 442,636 1,314,166 239,320 215,297 87,833 64,136 68,348 40,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2008 

Year 0 7 150 38 41 31 39 7 . . 2 

Total 540,399 439,432 695,175 484,571 1,140,170 409,179 1,290,781 208,776 182,380 77,783 58,321 58,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2009 

Year 1 6 141 60 22 42 24 13 3 . 3 

Total 348,025 600,445 432,646 769,712 452,706 1,147,469 380,440 1,308,578 188,646 167,453 78,192 55,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2010 

Year 3 6 157 36 26 34 43 10 11 1 5 

Total 463,884 409,166 611,897 469,722 1,012,825 462,347 1,193,482 388,749 1,355,367 218,014 196,057 95,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0
D-8 

Table D-8. Number of Inspection Cycles with DTC 449 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 20

2004 

Year 1 1 1 27 76 13 5 8 3 0 0 . 

Total 810,561 516,697 971,755 511,922 1,245,836 308,108 256,568 247,453 143,357 7,887 6 . %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2005 

Year 1 0 1 51 40 14 0 3 10 1 0 

Total 432,051 842,942 501,595 1,040,290 296,247 243,609 118,992 79,784 77,762 51,387 2,688 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2006 

Year 1 3 1 35 153 27 10 12 11 6 1 

Total 667,343 499,630 836,110 518,456 1,350,221 259,989 229,412 99,549 68,995 75,619 45,474 3,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2007 

Year 0 2 1 68 79 141 12 12 14 7 3 

Total 387,300 704,889 478,407 893,653 442,636 1,314,166 239,320 215,297 87,833 64,136 68,348 40,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2008 

Year 1 0 4 43 143 51 105 22 20 3 3 

Total 540,399 439,432 695,175 484,571 1,140,170 409,179 1,290,781 208,776 182,380 77,783 58,321 58,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2009 

Year 1 2 1 64 91 151 51 138 30 16 8 

Total 348,025 600,445 432,646 769,712 452,706 1,147,469 380,440 1,308,578 188,646 167,453 78,192 55,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2010 

Year 1 0 1 58 159 54 108 70 276 26 21 . 

Total 463,884 409,166 611,897 469,722 1,012,825 462,347 1,193,482 388,749 1,355,367 218,014 196,057 95,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0
D-9 

Table D-9. Number of Inspection Cycles with DTC 450 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 20

2004 

Year 48 97 198 77 160 23 1 2 1 0 0 . 

Total 810,561 516,697 971,755 511,922 1,245,836 308,108 256,568 247,453 143,357 7,887 6 . %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2005 

Year 40 143 123 142 47 18 4 1 1 0 0 

Total 432,051 842,942 501,595 1,040,290 296,247 243,609 118,992 79,784 77,762 51,387 2,688 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2006 

Year 69 112 189 68 307 13 1 3 0 0 0 

Total 667,343 499,630 836,110 518,456 1,350,221 259,989 229,412 99,549 68,995 75,619 45,474 3,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2007 

Year 51 183 125 102 170 151 9 4 0 0 0 

Total 387,300 704,889 478,407 893,653 442,636 1,314,166 239,320 215,297 87,833 64,136 68,348 40,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2008 

Year 62 139 140 71 380 38 60 4 7 0 0 

Total 540,399 439,432 695,175 484,571 1,140,170 409,179 1,290,781 208,776 182,380 77,783 58,321 58,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2009 

Year 40 218 93 89 224 169 21 28 8 1 0 

Total 348,025 600,445 432,646 769,712 452,706 1,147,469 380,440 1,308,578 188,646 167,453 78,192 55,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2010 

Year 51 136 108 72 416 81 74 7 59 0 0 

Total 463,884 409,166 611,897 469,722 1,012,825 462,347 1,193,482 388,749 1,355,367 218,014 196,057 95,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0
D-10 

Table D10. Number of Inspection Cycles with DTC 452 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 20

2004 

Year 13 17 158 99 147 32 35 13 4 0 0 . 

Total 810,561 516,697 971,755 511,922 1,245,836 308,108 256,568 247,453 143,357 7,887 6 . %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2005 

Year 12 22 205 266 64 48 14 13 7 4 0 

Total 432,051 842,942 501,595 1,040,290 296,247 243,609 118,992 79,784 77,762 51,387 2,688 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2006 

Year 13 18 426 344 386 78 28 10 2 8 0 

Total 667,343 499,630 836,110 518,456 1,350,221 259,989 229,412 99,549 68,995 75,619 45,474 3,%w/DTC 0.0% 0.0% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2007 

Year 7 19 482 585 247 390 31 17 2 7 1 

Total 387,300 704,889 478,407 893,653 442,636 1,314,166 239,320 215,297 87,833 64,136 68,348 40,%w/DTC 0.0% 0.0% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2008 

Year 11 23 690 545 525 172 230 17 11 4 1 . 

Total 540,399 439,432 695,175 484,571 1,140,170 409,179 1,290,781 208,776 182,380 77,783 58,321 58,%w/DTC 0.0% 0.0% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2009 

Year 8 18 592 778 382 449 131 122 7 18 2 

Total 348,025 600,445 432,646 769,712 452,706 1,147,469 380,440 1,308,578 188,646 167,453 78,192 55,%w/DTC 0.0% 0.0% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0

2010 

Year 11 14 661 584 657 255 360 66 87 14 0 

Total 463,884 409,166 611,897 469,722 1,012,825 462,347 1,193,482 388,749 1,355,367 218,014 196,057 95,%w/DTC 0.0% 0.0% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0
D-11 

Table D-11. Number of Inspection Cycles with DTC 455 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 20

2004 

Year 513 1,660 3,435 1,449 3,228 826 413 381 188 4 0 . 

Total 810,561 516,697 971,755 511,922 1,245,836 308,108 256,568 247,453 143,357 7,887 6 . %w/DTC 0.1% 0.3% 0.4% 0.3% 0.3% 0.3% 0.2% 0.2% 0.1% 0.1% 0.0% . 

2005 

Year 303 2,612 2,360 2,782 801 816 271 120 111 56 1 

Total 432,051 842,942 501,595 1,040,290 296,247 243,609 118,992 79,784 77,762 51,387 2,688 %w/DTC 0.1% 0.3% 0.5% 0.3% 0.3% 0.3% 0.2% 0.2% 0.1% 0.1% 0.0% 0

2006 

Year 456 1,907 3,461 1,724 3,883 895 565 161 108 112 18 

Total 667,343 499,630 836,110 518,456 1,350,221 259,989 229,412 99,549 68,995 75,619 45,474 3,%w/DTC 0.1% 0.4% 0.4% 0.3% 0.3% 0.3% 0.2% 0.2% 0.2% 0.1% 0.0% 0

2007 

Year 311 2,246 2,577 2,513 1,777 6,392 700 352 135 101 38 

Total 387,300 704,889 478,407 893,653 442,636 1,314,166 239,320 215,297 87,833 64,136 68,348 40,%w/DTC 0.1% 0.3% 0.5% 0.3% 0.4% 0.5% 0.3% 0.2% 0.2% 0.2% 0.1% 0

2008 

Year 434 1,754 3,126 1,731 3,618 2,773 5,563 434 346 159 48 

Total 540,399 439,432 695,175 484,571 1,140,170 409,179 1,290,781 208,776 182,380 77,783 58,321 58,%w/DTC 0.1% 0.4% 0.4% 0.4% 0.3% 0.7% 0.4% 0.2% 0.2% 0.2% 0.1% 0

2009 

Year 340 2,015 2,369 2,402 1,966 5,614 2,360 3,742 408 355 79 

Total 348,025 600,445 432,646 769,712 452,706 1,147,469 380,440 1,308,578 188,646 167,453 78,192 55,%w/DTC 0.1% 0.3% 0.5% 0.3% 0.4% 0.5% 0.6% 0.3% 0.2% 0.2% 0.1% 0

2010 

Year 435 1,676 2,806 1,843 3,524 2,917 5,200 1,475 3,618 464 178 

Total 463,884 409,166 611,897 469,722 1,012,825 462,347 1,193,482 388,749 1,355,367 218,014 196,057 95,%w/DTC 0.1% 0.4% 0.5% 0.4% 0.3% 0.6% 0.4% 0.4% 0.3% 0.2% 0.1% 0
D-12 

Table D-12. Number of Inspection Cycles with DTC 456 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 20

2004 

Year 91 158 2,983 1,685 4,900 1,113 990 295 59 1 0 . 

Total 810,561 516,697 971,755 511,922 1,245,836 308,108 256,568 247,453 143,357 7,887 6 . %w/DTC 0.0% 0.0% 0.3% 0.3% 0.4% 0.4% 0.4% 0.1% 0.0% 0.0% 0.0% . 

2005 

Year 63 244 1,596 3,882 854 807 535 160 61 13 0 

Total 432,051 842,942 501,595 1,040,290 296,247 243,609 118,992 79,784 77,762 51,387 2,688 %w/DTC 0.0% 0.0% 0.3% 0.4% 0.3% 0.3% 0.4% 0.2% 0.1% 0.0% 0.0% 0

2006 

Year 76 171 2,775 1,914 5,460 1,117 1,174 252 100 39 9 

Total 667,343 499,630 836,110 518,456 1,350,221 259,989 229,412 99,549 68,995 75,619 45,474 3,%w/DTC 0.0% 0.0% 0.3% 0.4% 0.4% 0.4% 0.5% 0.3% 0.1% 0.1% 0.0% 0

2007 

Year 64 215 1,711 3,458 1,658 7,490 1,222 527 169 80 12 

Total 387,300 704,889 478,407 893,653 442,636 1,314,166 239,320 215,297 87,833 64,136 68,348 40,%w/DTC 0.0% 0.0% 0.4% 0.4% 0.4% 0.6% 0.5% 0.2% 0.2% 0.1% 0.0% 0

2008 

Year 76 142 2,690 1,825 4,802 2,317 10,213 723 386 92 23 

Total 540,399 439,432 695,175 484,571 1,140,170 409,179 1,290,781 208,776 182,380 77,783 58,321 58,%w/DTC 0.0% 0.0% 0.4% 0.4% 0.4% 0.6% 0.8% 0.3% 0.2% 0.1% 0.0% 0

2009 

Year 59 219 1,947 3,181 1,974 6,987 2,887 7,132 504 193 30 

Total 348,025 600,445 432,646 769,712 452,706 1,147,469 380,440 1,308,578 188,646 167,453 78,192 55,%w/DTC 0.0% 0.0% 0.5% 0.4% 0.4% 0.6% 0.8% 0.5% 0.3% 0.1% 0.0% 0

2010 

Year 59 134 3,072 2,027 4,718 2,982 10,053 2,134 6,106 311 70 

Total 463,884 409,166 611,897 469,722 1,012,825 462,347 1,193,482 388,749 1,355,367 218,014 196,057 95,%w/DTC 0.0% 0.0% 0.5% 0.4% 0.5% 0.6% 0.8% 0.5% 0.5% 0.1% 0.0% 0
D-13 

Table D-13. Number of Inspection Cycles with DTC 457 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 20

2004 

Year 26 85 206 167 270 185 139 197 68 0 0 . 

Total 810,561 516,697 971,755 511,922 1,245,836 308,108 256,568 247,453 143,357 7,887 6 . %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% . 

2005 

Year 22 144 157 307 105 191 75 105 57 17 0 

Total 432,051 842,942 501,595 1,040,290 296,247 243,609 118,992 79,784 77,762 51,387 2,688 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0

2006 

Year 29 126 254 210 366 204 156 120 74 41 7 

Total 667,343 499,630 836,110 518,456 1,350,221 259,989 229,412 99,549 68,995 75,619 45,474 3,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0

2007 

Year 28 159 224 306 177 1,412 181 245 130 51 12 

Total 387,300 704,889 478,407 893,653 442,636 1,314,166 239,320 215,297 87,833 64,136 68,348 40,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0

2008 

Year 34 136 261 242 351 607 1,403 252 263 65 31 

Total 540,399 439,432 695,175 484,571 1,140,170 409,179 1,290,781 208,776 182,380 77,783 58,321 58,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0

2009 

Year 32 150 236 330 223 1,709 622 2,118 328 117 47 

Total 348,025 600,445 432,646 769,712 452,706 1,147,469 380,440 1,308,578 188,646 167,453 78,192 55,%w/DTC 0.0% 0.0% 0.1% 0.0% 0.0% 0.1% 0.2% 0.2% 0.2% 0.1% 0.1% 0

2010 

Year 36 136 271 206 392 909 1,774 674 2,657 202 115 

Total 463,884 409,166 611,897 469,722 1,012,825 462,347 1,193,482 388,749 1,355,367 218,014 196,057 95,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.2% 0.1% 0.2% 0.2% 0.1% 0.1% 0
D-14 

Table D-14. Number of Inspection Cycles with DTC 440 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2007 

Year 118 150 221 219 235 216 207 115 26 0 0 0 

Total 86,221 104,473 120,599 141,773 162,736 160,655 175,040 176,875 187,828 270 33 1 %w/DTC 0.1% 0.1% 0.2% 0.2% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 

2008 

Year 129 158 255 230 292 285 270 161 35 1 0 0 

Total 75,210 91,437 105,053 129,595 151,430 151,741 166,816 167,678 176,481 182,274 224 62 %w/DTC 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.1% 0.0% 0.0% 0.0% 0.0% 

2009 

Year 119 157 219 274 321 350 276 200 52 5 0 0 

Total 66,540 82,052 94,083 116,227 140,870 143,391 159,370 161,291 168,772 169,544 177,769 446 %w/DTC 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.1% 0.0% 0.0% 0.0% 0.0% 

2010 

Year 121 178 242 242 299 350 318 199 48 8 3 3 

Total 59,887 74,645 85,547 105,528 128,581 135,363 152,925 157,135 165,719 165,354 169,173 185,562 %w/DTC 0.2% 0.2% 0.3% 0.2% 0.2% 0.3% 0.2% 0.1% 0.0% 0.0% 0.0% 0.0% 

2011 

Year 117 150 235 229 298 368 343 178 59 6 0 2 

Total 52,826 67,607 77,743 96,822 118,358 125,100 146,159 151,629 161,859 163,129 166,142 174,090 %w/DTC 0.2% 0.2% 0.3% 0.2% 0.3% 0.3% 0.2% 0.1% 0.0% 0.0% 0.0% 0.0% 

2012 

Year 94 122 208 251 341 381 355 224 51 8 2 2 

Total 46,544 60,051 69,510 87,437 108,562 115,802 135,902 145,333 156,673 159,423 163,487 170,765 %w/DTC 0.2% 0.2% 0.3% 0.3% 0.3% 0.3% 0.3% 0.2% 0.0% 0.0% 0.0% 0.0% 
D-15 

Table D-15. Number of Inspection Cycles with DTC 441 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2007 

Year 255 177 53 56 102 96 141 145 77 0 0 0 

Total 86,221 104,473 120,599 141,773 162,736 160,655 175,040 176,875 187,828 270 33 1 %w/DTC 0.3% 0.2% 0.0% 0.0% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 

2008 

Year 242 175 60 66 120 134 211 202 92 27 0 0 

Total 75,210 91,437 105,053 129,595 151,430 151,741 166,816 167,678 176,481 182,274 224 62 %w/DTC 0.3% 0.2% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 

2009 

Year 220 189 61 74 155 140 208 257 142 40 20 0 

Total 66,540 82,052 94,083 116,227 140,870 143,391 159,370 161,291 168,772 169,544 177,769 446 %w/DTC 0.3% 0.2% 0.1% 0.1% 0.1% 0.1% 0.1% 0.2% 0.1% 0.0% 0.0% 0.0% 

2010 

Year 226 189 55 79 138 163 227 266 172 60 34 19 

Total 59,887 74,645 85,547 105,528 128,581 135,363 152,925 157,135 165,719 165,354 169,173 185,562 %w/DTC 0.4% 0.3% 0.1% 0.1% 0.1% 0.1% 0.1% 0.2% 0.1% 0.0% 0.0% 0.0% 

2011 

Year 194 178 57 67 126 158 208 254 133 49 42 34 

Total 52,826 67,607 77,743 96,822 118,358 125,100 146,159 151,629 161,859 163,129 166,142 174,090 %w/DTC 0.4% 0.3% 0.1% 0.1% 0.1% 0.1% 0.1% 0.2% 0.1% 0.0% 0.0% 0.0% 

2012 

Year 167 173 41 74 149 171 216 275 143 78 55 37 

Total 46,544 60,051 69,510 87,437 108,562 115,802 135,902 145,333 156,673 159,423 163,487 170,765 %w/DTC 0.4% 0.3% 0.1% 0.1% 0.1% 0.1% 0.2% 0.2% 0.1% 0.0% 0.0% 0.0% 
D-16 

Table D-16. Number of Inspection Cycles with DTC 442 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2007 

Year 45 96 130 86 221 284 288 301 119 0 0 0 

Total 86,221 104,473 120,599 141,773 162,736 160,655 175,040 176,875 187,828 270 33 1 %w/DTC 0.1% 0.1% 0.1% 0.1% 0.1% 0.2% 0.2% 0.2% 0.1% 0.0% 0.0% 0.0% 

2008 

Year 37 97 136 121 284 385 408 382 171 76 0 0 

Total 75,210 91,437 105,053 129,595 151,430 151,741 166,816 167,678 176,481 182,274 224 62 %w/DTC 0.0% 0.1% 0.1% 0.1% 0.2% 0.3% 0.2% 0.2% 0.1% 0.0% 0.0% 0.0% 

2009 

Year 33 112 155 131 269 459 570 534 252 115 73 0 

Total 66,540 82,052 94,083 116,227 140,870 143,391 159,370 161,291 168,772 169,544 177,769 446 %w/DTC 0.0% 0.1% 0.2% 0.1% 0.2% 0.3% 0.4% 0.3% 0.1% 0.1% 0.0% 0.0% 

2010 

Year 38 91 129 134 273 468 499 556 316 147 131 63 

Total 59,887 74,645 85,547 105,528 128,581 135,363 152,925 157,135 165,719 165,354 169,173 185,562 %w/DTC 0.1% 0.1% 0.2% 0.1% 0.2% 0.3% 0.3% 0.4% 0.2% 0.1% 0.1% 0.0% 

2011 

Year 16 79 155 142 218 410 456 538 299 188 150 88 

Total 52,826 67,607 77,743 96,822 118,358 125,100 146,159 151,629 161,859 163,129 166,142 174,090 %w/DTC 0.0% 0.1% 0.2% 0.1% 0.2% 0.3% 0.3% 0.4% 0.2% 0.1% 0.1% 0.1% 

2012 

Year 23 66 125 116 232 369 427 578 338 207 157 118 

Total 46,544 60,051 69,510 87,437 108,562 115,802 135,902 145,333 156,673 159,423 163,487 170,765 %w/DTC 0.0% 0.1% 0.2% 0.1% 0.2% 0.3% 0.3% 0.4% 0.2% 0.1% 0.1% 0.1% 
D-17 

Table D-17. Number of Inspection Cycles with DTC 443 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2007 

Year 327 263 52 17 18 18 9 5 2 0 0 0 

Total 86,221 104,473 120,599 141,773 162,736 160,655 175,040 176,875 187,828 270 33 1 %w/DTC 0.4% 0.3% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2008 

Year 247 248 47 24 18 20 6 4 3 2 0 0 

Total 75,210 91,437 105,053 129,595 151,430 151,741 166,816 167,678 176,481 182,274 224 62 %w/DTC 0.3% 0.3% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2009 

Year 238 209 44 17 32 26 10 10 7 0 1 0 

Total 66,540 82,052 94,083 116,227 140,870 143,391 159,370 161,291 168,772 169,544 177,769 446 %w/DTC 0.4% 0.3% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2010 

Year 231 256 55 20 23 37 17 13 7 1 1 2 

Total 59,887 74,645 85,547 105,528 128,581 135,363 152,925 157,135 165,719 165,354 169,173 185,562 %w/DTC 0.4% 0.3% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2011 

Year 225 205 42 10 32 31 22 14 8 2 2 3 

Total 52,826 67,607 77,743 96,822 118,358 125,100 146,159 151,629 161,859 163,129 166,142 174,090 %w/DTC 0.4% 0.3% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2012 

Year 198 200 47 23 36 25 22 16 11 9 1 3 

Total 46,544 60,051 69,510 87,437 108,562 115,802 135,902 145,333 156,673 159,423 163,487 170,765 %w/DTC 0.4% 0.3% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 
D-18 

Table D-18. Number of Inspection Cycles with DTC 446 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2007 

Year 37 112 116 150 109 111 119 73 30 0 0 . 

Total 86,221 104,473 120,599 141,773 162,736 160,655 175,040 176,875 187,828 270 33 . %w/DTC 0.0% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% . 

2008 

Year 50 111 103 181 130 157 139 92 33 15 0 0 

Total 75,210 91,437 105,053 129,595 151,430 151,741 166,816 167,678 176,481 182,274 224 62 %w/DTC 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 

2009 

Year 46 102 119 165 153 155 149 117 43 15 9 0 

Total 66,540 82,052 94,083 116,227 140,870 143,391 159,370 161,291 168,772 169,544 177,769 446 %w/DTC 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 

2010 

Year 44 108 120 181 156 221 178 120 56 34 10 2 

Total 59,887 74,645 85,547 105,528 128,581 135,363 152,925 157,135 165,719 165,354 169,173 185,562 %w/DTC 0.1% 0.1% 0.1% 0.2% 0.1% 0.2% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 

2011 

Year 58 118 127 215 165 223 196 141 63 24 5 3 

Total 52,826 67,607 77,743 96,822 118,358 125,100 146,159 151,629 161,859 163,129 166,142 174,090 %w/DTC 0.1% 0.2% 0.2% 0.2% 0.1% 0.2% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 

2012 

Year 43 95 142 188 189 237 202 189 72 29 21 7 

Total 46,544 60,051 69,510 87,437 108,562 115,802 135,902 145,333 156,673 159,423 163,487 170,765 %w/DTC 0.1% 0.2% 0.2% 0.2% 0.2% 0.2% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 
D-19 

Table D-19. Number of Inspection Cycles with DTC 447 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2007 

Year 5 18 4 2 1 1 0 1 0 0 0 . 

Total 86,221 104,473 120,599 141,773 162,736 160,655 175,040 176,875 187,828 270 33 . %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2008 

Year 9 24 10 7 3 2 1 1 1 2 0 0 

Total 75,210 91,437 105,053 129,595 151,430 151,741 166,816 167,678 176,481 182,274 224 62 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2009 

Year 12 41 9 4 3 2 1 0 2 2 0 0 

Total 66,540 82,052 94,083 116,227 140,870 143,391 159,370 161,291 168,772 169,544 177,769 446 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2010 

Year 9 58 12 8 2 3 1 4 4 2 3 1 

Total 59,887 74,645 85,547 105,528 128,581 135,363 152,925 157,135 165,719 165,354 169,173 185,562 %w/DTC 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2011 

Year 13 86 11 9 5 2 1 2 3 1 0 1 

Total 52,826 67,607 77,743 96,822 118,358 125,100 146,159 151,629 161,859 163,129 166,142 174,090 %w/DTC 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2012 

Year 13 71 26 8 5 7 4 3 1 1 2 2 

Total 46,544 60,051 69,510 87,437 108,562 115,802 135,902 145,333 156,673 159,423 163,487 170,765 %w/DTC 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 
D-20 

Table D-20. Number of Inspection Cycles with DTC 448 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2007 

Year 0 1 22 7 7 3 9 6 0 0 0 0 

Total 86,221 104,473 120,599 141,773 162,736 160,655 175,040 176,875 187,828 270 33 1 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2008 

Year 0 0 33 10 5 5 16 7 1 0 0 0 

Total 75,210 91,437 105,053 129,595 151,430 151,741 166,816 167,678 176,481 182,274 224 62 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2009 

Year 0 0 23 10 3 3 6 1 1 0 1 0 

Total 66,540 82,052 94,083 116,227 140,870 143,391 159,370 161,291 168,772 169,544 177,769 446 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2010 

Year 0 3 22 5 7 4 13 6 2 0 2 1 

Total 59,887 74,645 85,547 105,528 128,581 135,363 152,925 157,135 165,719 165,354 169,173 185,562 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2011 

Year 0 1 18 10 6 10 14 5 0 0 1 0 

Total 52,826 67,607 77,743 96,822 118,358 125,100 146,159 151,629 161,859 163,129 166,142 174,090 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2012 

Year 0 0 22 10 5 7 21 9 5 1 3 0 

Total 46,544 60,051 69,510 87,437 108,562 115,802 135,902 145,333 156,673 159,423 163,487 170,765 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 
D-21 

Table D-21. Number of Inspection Cycles with DTC 449 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2007 

Year 0 0 0 13 12 10 4 5 1 0 0 0 

Total 86,221 104,473 120,599 141,773 162,736 160,655 175,040 176,875 187,828 270 33 1 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2008 

Year 0 0 0 9 16 11 10 11 2 7 0 0 

Total 75,210 91,437 105,053 129,595 151,430 151,741 166,816 167,678 176,481 182,274 224 62 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2009 

Year 0 0 0 11 14 12 5 16 5 13 41 0 

Total 66,540 82,052 94,083 116,227 140,870 143,391 159,370 161,291 168,772 169,544 177,769 446 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2010 

Year 0 0 0 16 14 16 14 38 10 15 91 55 

Total 59,887 74,645 85,547 105,528 128,581 135,363 152,925 157,135 165,719 165,354 169,173 185,562 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.1% 0.0% 

2011 

Year 0 0 0 10 17 9 12 29 13 29 99 55 

Total 52,826 67,607 77,743 96,822 118,358 125,100 146,159 151,629 161,859 163,129 166,142 174,090 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.1% 0.0% 

2012 

Year 0 0 0 12 11 13 22 31 10 27 80 64 

Total 46,544 60,051 69,510 87,437 108,562 115,802 135,902 145,333 156,673 159,423 163,487 170,765 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 
D-22 

Table D-22. Number of Inspection Cycles with DTC 450 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2007 

Year 2 10 25 9 24 8 2 4 2 0 0 0 

Total 86,221 104,473 120,599 141,773 162,736 160,655 175,040 176,875 187,828 270 33 1 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2008 

Year 3 15 22 6 24 10 1 1 0 0 0 0 

Total 75,210 91,437 105,053 129,595 151,430 151,741 166,816 167,678 176,481 182,274 224 62 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2009 

Year 6 19 18 6 21 11 5 3 2 3 2 0 

Total 66,540 82,052 94,083 116,227 140,870 143,391 159,370 161,291 168,772 169,544 177,769 446 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2010 

Year 4 20 17 4 27 7 5 1 2 3 2 0 

Total 59,887 74,645 85,547 105,528 128,581 135,363 152,925 157,135 165,719 165,354 169,173 185,562 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2011 

Year 5 18 15 11 25 11 7 0 1 3 0 1 

Total 52,826 67,607 77,743 96,822 118,358 125,100 146,159 151,629 161,859 163,129 166,142 174,090 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2012 

Year 8 22 4 6 23 17 2 3 3 2 1 0 

Total 46,544 60,051 69,510 87,437 108,562 115,802 135,902 145,333 156,673 159,423 163,487 170,765 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 
D-23 

Table D-23. Number of Inspection Cycles with DTC 452 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2007 

Year 3 2 31 36 21 11 4 3 1 0 0 0 

Total 86,221 104,473 120,599 141,773 162,736 160,655 175,040 176,875 187,828 270 33 1 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2008 

Year 1 1 42 40 44 13 10 7 4 3 0 0 

Total 75,210 91,437 105,053 129,595 151,430 151,741 166,816 167,678 176,481 182,274 224 62 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2009 

Year 1 2 47 52 28 17 6 8 1 0 2 0 

Total 66,540 82,052 94,083 116,227 140,870 143,391 159,370 161,291 168,772 169,544 177,769 446 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2010 

Year 0 0 52 66 39 35 19 5 6 5 2 2 

Total 59,887 74,645 85,547 105,528 128,581 135,363 152,925 157,135 165,719 165,354 169,173 185,562 %w/DTC 0.0% 0.0% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2011 

Year 1 0 47 75 44 29 19 15 4 1 3 4 

Total 52,826 67,607 77,743 96,822 118,358 125,100 146,159 151,629 161,859 163,129 166,142 174,090 %w/DTC 0.0% 0.0% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2012 

Year 0 1 48 71 51 41 27 12 4 1 3 4 

Total 46,544 60,051 69,510 87,437 108,562 115,802 135,902 145,333 156,673 159,423 163,487 170,765 %w/DTC 0.0% 0.0% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 
D-24 

Table D-24. Number of Inspection Cycles with DTC 455 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2007 

Year 30 186 210 117 155 310 321 149 110 0 0 0 

Total 86,221 104,473 120,599 141,773 162,736 160,655 175,040 176,875 187,828 270 33 1 %w/DTC 0.0% 0.2% 0.2% 0.1% 0.1% 0.2% 0.2% 0.1% 0.1% 0.0% 0.0% 0.0% 

2008 

Year 37 176 234 148 179 456 463 242 148 119 0 0 

Total 75,210 91,437 105,053 129,595 151,430 151,741 166,816 167,678 176,481 182,274 224 62 %w/DTC 0.0% 0.2% 0.2% 0.1% 0.1% 0.3% 0.3% 0.1% 0.1% 0.1% 0.0% 0.0% 

2009 

Year 38 180 205 135 190 476 547 348 275 179 116 0 

Total 66,540 82,052 94,083 116,227 140,870 143,391 159,370 161,291 168,772 169,544 177,769 446 %w/DTC 0.1% 0.2% 0.2% 0.1% 0.1% 0.3% 0.3% 0.2% 0.2% 0.1% 0.1% 0.0% 

2010 

Year 38 171 214 154 195 484 505 356 294 269 199 97 

Total 59,887 74,645 85,547 105,528 128,581 135,363 152,925 157,135 165,719 165,354 169,173 185,562 %w/DTC 0.1% 0.2% 0.3% 0.1% 0.2% 0.4% 0.3% 0.2% 0.2% 0.2% 0.1% 0.1% 

2011 

Year 23 154 168 152 178 406 498 313 310 266 261 161 

Total 52,826 67,607 77,743 96,822 118,358 125,100 146,159 151,629 161,859 163,129 166,142 174,090 %w/DTC 0.0% 0.2% 0.2% 0.2% 0.2% 0.3% 0.3% 0.2% 0.2% 0.2% 0.2% 0.1% 

2012 

Year 35 153 174 137 208 388 444 310 321 310 312 209 

Total 46,544 60,051 69,510 87,437 108,562 115,802 135,902 145,333 156,673 159,423 163,487 170,765 %w/DTC 0.1% 0.3% 0.3% 0.2% 0.2% 0.3% 0.3% 0.2% 0.2% 0.2% 0.2% 0.1% 
D-25 

Table D-25. Number of Inspection Cycles with DTC 456 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2007 

Year 2 8 70 40 66 126 232 181 79 0 0 0 

Total 86,221 104,473 120,599 141,773 162,736 160,655 175,040 176,875 187,828 270 33 1 %w/DTC 0.0% 0.0% 0.1% 0.0% 0.0% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 

2008 

Year 1 11 95 65 70 168 267 239 108 55 0 0 

Total 75,210 91,437 105,053 129,595 151,430 151,741 166,816 167,678 176,481 182,274 224 62 %w/DTC 0.0% 0.0% 0.1% 0.1% 0.0% 0.1% 0.2% 0.1% 0.1% 0.0% 0.0% 0.0% 

2009 

Year 1 10 132 74 92 205 358 325 162 78 60 0 

Total 66,540 82,052 94,083 116,227 140,870 143,391 159,370 161,291 168,772 169,544 177,769 446 %w/DTC 0.0% 0.0% 0.1% 0.1% 0.1% 0.1% 0.2% 0.2% 0.1% 0.0% 0.0% 0.0% 

2010 

Year 0 6 133 72 96 184 325 304 165 101 88 78 

Total 59,887 74,645 85,547 105,528 128,581 135,363 152,925 157,135 165,719 165,354 169,173 185,562 %w/DTC 0.0% 0.0% 0.2% 0.1% 0.1% 0.1% 0.2% 0.2% 0.1% 0.1% 0.1% 0.0% 

2011 

Year 3 11 150 81 92 168 274 270 172 135 109 108 

Total 52,826 67,607 77,743 96,822 118,358 125,100 146,159 151,629 161,859 163,129 166,142 174,090 %w/DTC 0.0% 0.0% 0.2% 0.1% 0.1% 0.1% 0.2% 0.2% 0.1% 0.1% 0.1% 0.1% 

2012 

Year 3 12 161 79 94 140 262 263 182 161 149 96 

Total 46,544 60,051 69,510 87,437 108,562 115,802 135,902 145,333 156,673 159,423 163,487 170,765 %w/DTC 0.0% 0.0% 0.2% 0.1% 0.1% 0.1% 0.2% 0.2% 0.1% 0.1% 0.1% 0.1% 
D-26 

Table D-26. Number of Inspection Cycles with DTC 457 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2007 

Year 3 18 38 29 16 33 32 25 11 0 0 0 

Total 86,221 104,473 120,599 141,773 162,736 160,655 175,040 176,875 187,828 270 33 1 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2008 

Year 3 23 25 37 29 30 41 33 12 26 0 0 

Total 75,210 91,437 105,053 129,595 151,430 151,741 166,816 167,678 176,481 182,274 224 62 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2009 

Year 5 22 31 39 27 49 52 31 15 36 23 0 

Total 66,540 82,052 94,083 116,227 140,870 143,391 159,370 161,291 168,772 169,544 177,769 446 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2010 

Year 2 20 46 36 29 64 46 46 26 39 32 35 

Total 59,887 74,645 85,547 105,528 128,581 135,363 152,925 157,135 165,719 165,354 169,173 185,562 %w/DTC 0.0% 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2011 

Year 5 21 31 32 40 50 75 50 35 61 50 30 

Total 52,826 67,607 77,743 96,822 118,358 125,100 146,159 151,629 161,859 163,129 166,142 174,090 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 

2012 

Year 4 18 43 43 38 57 88 42 33 67 68 49 

Total 46,544 60,051 69,510 87,437 108,562 115,802 135,902 145,333 156,673 159,423 163,487 170,765 %w/DTC 0.0% 0.0% 0.1% 0.0% 0.0% 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 
D-27 

Table D-27. Number of Inspection Cycles with DTC 440 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 200

2005 

Year 218 649 500 296 182 337 118 23 7 0 0 . 

Total 75,983 175,748 109,776 210,126 149,671 257,887 133,550 46,229 24,040 10,583 334 . %w/DTC 0.3% 0.4% 0.5% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% . 

2006 

Year 289 466 618 241 375 228 353 86 15 0 0 

Total 123,740 75,286 160,245 107,288 224,672 127,510 274,461 114,192 31,183 20,469 12,954 4%w/DTC 0.2% 0.6% 0.4% 0.2% 0.2% 0.2% 0.1% 0.1% 0.0% 0.0% 0.0% 0.

2007 

Year 230 567 516 368 297 464 226 276 53 0 0 

Total 64,117 139,445 94,372 175,277 135,525 222,527 144,704 286,939 110,806 34,310 26,882 12,%w/DTC 0.4% 0.4% 0.5% 0.2% 0.2% 0.2% 0.2% 0.1% 0.0% 0.0% 0.0% 0.

2008 

Year 230 351 524 326 393 293 477 184 61 2 0 

Total 86,214 59,396 118,266 86,064 178,528 111,461 225,227 117,687 242,347 96,650 31,588 24,3%w/DTC 0.3% 0.6% 0.4% 0.4% 0.2% 0.3% 0.2% 0.2% 0.0% 0.0% 0.0% 0.

2009 

Year 149 438 375 361 286 472 279 361 47 9 0 

Total 40,797 89,350 62,188 119,328 96,311 164,854 114,012 219,130 109,265 223,890 94,323 31,3%w/DTC 0.4% 0.5% 0.6% 0.3% 0.3% 0.3% 0.2% 0.2% 0.0% 0.0% 0.0% 0.

2010 

Year 20 38 42 35 41 54 60 27 17 2 0 

Total 8,874 8,668 12,595 10,866 21,822 13,487 29,721 15,601 33,661 12,563 32,270 5,2%w/DTC 0.2% 0.4% 0.3% 0.3% 0.2% 0.4% 0.2% 0.2% 0.1% 0.0% 0.0% 0.
D-28 

Table D-28. Number of Inspection Cycles with DTC 441 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 200

2005 

Year 301 219 125 197 109 203 85 26 7 2 0 

Total 75,983 175,748 109,776 210,126 149,671 257,887 133,550 46,229 24,040 10,583 334 %w/DTC 0.4% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 

2006 

Year 394 174 248 208 246 127 248 101 35 1 0 

Total 123,740 75,286 160,245 107,288 224,672 127,510 274,461 114,192 31,183 20,469 12,954 4%w/DTC 0.3% 0.2% 0.2% 0.2% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.

2007 

Year 266 250 221 400 218 300 189 407 86 6 7 

Total 64,117 139,445 94,372 175,277 135,525 222,527 144,704 286,939 110,806 34,310 26,882 12,%w/DTC 0.4% 0.2% 0.2% 0.2% 0.2% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.

2008 

Year 362 197 260 302 276 175 410 251 201 29 6 

Total 86,214 59,396 118,266 86,064 178,528 111,461 225,227 117,687 242,347 96,650 31,588 24,3%w/DTC 0.4% 0.3% 0.2% 0.4% 0.2% 0.2% 0.2% 0.2% 0.1% 0.0% 0.0% 0.

2009 

Year 207 220 194 350 223 284 221 473 144 65 19 

Total 40,797 89,350 62,188 119,328 96,311 164,854 114,012 219,130 109,265 223,890 94,323 31,3%w/DTC 0.5% 0.2% 0.3% 0.3% 0.2% 0.2% 0.2% 0.2% 0.1% 0.0% 0.0% 0.

2010 

Year 24 18 21 21 46 35 49 45 36 6 5 

Total 8,874 8,668 12,595 10,866 21,822 13,487 29,721 15,601 33,661 12,563 32,270 5,2%w/DTC 0.3% 0.2% 0.2% 0.2% 0.2% 0.3% 0.2% 0.3% 0.1% 0.0% 0.0% 0.
D-29 

Table D-29. Number of Inspection Cycles with DTC 442 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 200

2005 

Year 61 236 143 195 194 661 205 59 11 3 0 

Total 75,983 175,748 109,776 210,126 149,671 257,887 133,550 46,229 24,040 10,583 334 %w/DTC 0.1% 0.1% 0.1% 0.1% 0.1% 0.3% 0.2% 0.1% 0.0% 0.0% 0.0% 

2006 

Year 67 152 248 154 401 439 859 206 25 5 7 

Total 123,740 75,286 160,245 107,288 224,672 127,510 274,461 114,192 31,183 20,469 12,954 4%w/DTC 0.1% 0.2% 0.2% 0.1% 0.2% 0.3% 0.3% 0.2% 0.1% 0.0% 0.1% 0.

2007 

Year 53 248 240 306 361 955 588 853 140 22 5 

Total 64,117 139,445 94,372 175,277 135,525 222,527 144,704 286,939 110,806 34,310 26,882 12,%w/DTC 0.1% 0.2% 0.3% 0.2% 0.3% 0.4% 0.4% 0.3% 0.1% 0.1% 0.0% 0.

2008 

Year 54 144 292 218 601 577 1,212 545 349 73 11 

Total 86,214 59,396 118,266 86,064 178,528 111,461 225,227 117,687 242,347 96,650 31,588 24,3%w/DTC 0.1% 0.2% 0.2% 0.3% 0.3% 0.5% 0.5% 0.5% 0.1% 0.1% 0.0% 0.

2009 

Year 31 183 209 298 362 824 640 1,202 231 145 39 

Total 40,797 89,350 62,188 119,328 96,311 164,854 114,012 219,130 109,265 223,890 94,323 31,3%w/DTC 0.1% 0.2% 0.3% 0.2% 0.4% 0.5% 0.6% 0.5% 0.2% 0.1% 0.0% 0.

2010 

Year 5 16 27 33 67 83 128 82 56 13 12 

Total 8,874 8,668 12,595 10,866 21,822 13,487 29,721 15,601 33,661 12,563 32,270 5,2%w/DTC 0.1% 0.2% 0.2% 0.3% 0.3% 0.6% 0.4% 0.5% 0.2% 0.1% 0.0% 0.
D-30 

Table D-30. Number of Inspection Cycles with DTC 443 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 200

2005 

Year 555 812 29 24 16 23 2 1 0 0 0 . 

Total 75,983 175,748 109,776 210,126 149,671 257,887 133,550 46,229 24,040 10,583 334 . %w/DTC 0.7% 0.5% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2006 

Year 636 456 55 23 31 26 9 2 3 0 0 

Total 123,740 75,286 160,245 107,288 224,672 127,510 274,461 114,192 31,183 20,469 12,954 4%w/DTC 0.5% 0.6% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2007 

Year 412 586 62 33 16 29 17 8 3 0 0 

Total 64,117 139,445 94,372 175,277 135,525 222,527 144,704 286,939 110,806 34,310 26,882 12,%w/DTC 0.6% 0.4% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2008 

Year 418 316 63 31 47 35 19 6 6 2 0 

Total 86,214 59,396 118,266 86,064 178,528 111,461 225,227 117,687 242,347 96,650 31,588 24,3%w/DTC 0.5% 0.5% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2009 

Year 220 338 32 31 22 34 14 18 4 3 0 

Total 40,797 89,350 62,188 119,328 96,311 164,854 114,012 219,130 109,265 223,890 94,323 31,3%w/DTC 0.5% 0.4% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2010 

Year 24 29 4 5 2 3 4 2 0 0 0 

Total 8,874 8,668 12,595 10,866 21,822 13,487 29,721 15,601 33,661 12,563 32,270 5,2%w/DTC 0.3% 0.3% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.
D-31 

Table D-31. Number of Inspection Cycles with DTC 446 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 200

2005 

Year 105 558 238 195 135 271 71 19 2 1 0 

Total 75,983 175,748 109,776 210,126 149,671 257,887 133,550 46,229 24,040 10,583 334 %w/DTC 0.1% 0.3% 0.2% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 

2006 

Year 115 380 362 198 283 171 196 59 7 0 0 

Total 123,740 75,286 160,245 107,288 224,672 127,510 274,461 114,192 31,183 20,469 12,954 4%w/DTC 0.1% 0.5% 0.2% 0.2% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.

2007 

Year 95 425 325 352 228 396 152 191 20 5 2 

Total 64,117 139,445 94,372 175,277 135,525 222,527 144,704 286,939 110,806 34,310 26,882 12,%w/DTC 0.1% 0.3% 0.3% 0.2% 0.2% 0.2% 0.1% 0.1% 0.0% 0.0% 0.0% 0.

2008 

Year 123 268 366 283 298 230 304 104 65 11 .0 

Total 86,214 59,396 118,266 86,064 178,528 111,461 225,227 117,687 242,347 96,650 31,588 24,3%w/DTC 0.1% 0.5% 0.3% 0.3% 0.2% 0.2% 0.1% 0.1% 0.0% 0.0% 0.0% 0.

2009 

Year 72 307 256 342 188 373 173 230 39 31 7 

Total 40,797 89,350 62,188 119,328 96,311 164,854 114,012 219,130 109,265 223,890 94,323 31,3%w/DTC 0.2% 0.3% 0.4% 0.3% 0.2% 0.2% 0.2% 0.1% 0.0% 0.0% 0.0% 0.

2010 

Year 7 27 31 30 37 35 54 19 15 1 4 

Total 8,874 8,668 12,595 10,866 21,822 13,487 29,721 15,601 33,661 12,563 32,270 5,2%w/DTC 0.1% 0.3% 0.2% 0.3% 0.2% 0.3% 0.2% 0.1% 0.0% 0.0% 0.0% 0.
D-32 

Table D-32. Number of Inspection Cycles with DTC 447 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 200

2005 

Year 7 34 7 6 4 0 1 1 0 0 0 . 

Total 75,983 175,748 109,776 210,126 149,671 257,887 133,550 46,229 24,040 10,583 334 . %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2006 

Year 6 36 13 7 5 4 5 0 0 0 0 

Total 123,740 75,286 160,245 107,288 224,672 127,510 274,461 114,192 31,183 20,469 12,954 4%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2007 

Year 6 51 14 10 6 5 2 2 0 0 0 

Total 64,117 139,445 94,372 175,277 135,525 222,527 144,704 286,939 110,806 34,310 26,882 12,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2008 

Year 10 70 14 8 6 3 7 2 5 0 0 

Total 86,214 59,396 118,266 86,064 178,528 111,461 225,227 117,687 242,347 96,650 31,588 24,3%w/DTC 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2009 

Year 5 70 10 3 0 2 5 2 0 6 1 

Total 40,797 89,350 62,188 119,328 96,311 164,854 114,012 219,130 109,265 223,890 94,323 31,3%w/DTC 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2010 

Year 0 4 1 1 0 0 0 1 0 0 0 

Total 8,874 8,668 12,595 10,866 21,822 13,487 29,721 15,601 33,661 12,563 32,270 5,2%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.
D-33 

Table D-33. Number of Inspection Cycles with DTC 448 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 200

2005 

Year 0 1 230 53 13 23 9 1 0 0 0 . 

Total 75,983 175,748 109,776 210,126 149,671 257,887 133,550 46,229 24,040 10,583 334 . %w/DTC 0.0% 0.0% 0.2% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2006 

Year 0 1 257 42 19 15 18 8 0 0 0 

Total 123,740 75,286 160,245 107,288 224,672 127,510 274,461 114,192 31,183 20,469 12,954 4%w/DTC 0.0% 0.0% 0.2% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2007 

Year 0 3 178 57 20 33 20 18 0 0 1 

Total 64,117 139,445 94,372 175,277 135,525 222,527 144,704 286,939 110,806 34,310 26,882 12,%w/DTC 0.0% 0.0% 0.2% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2008 

Year 0 3 173 45 18 18 41 10 0 0 0 

Total 86,214 59,396 118,266 86,064 178,528 111,461 225,227 117,687 242,347 96,650 31,588 24,3%w/DTC 0.0% 0.0% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2009 

Year 0 1 99 34 13 26 28 25 3 0 2 

Total 40,797 89,350 62,188 119,328 96,311 164,854 114,012 219,130 109,265 223,890 94,323 31,3%w/DTC 0.0% 0.0% 0.2% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2010 

Year 0 0 5 4 1 3 4 1 0 0 0 

Total 8,874 8,668 12,595 10,866 21,822 13,487 29,721 15,601 33,661 12,563 32,270 5,2%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.
D-34 

Table D-34. Number of Inspection Cycles with DTC 449 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 200

2005 

Year 0 0 1 13 9 4 3 1 0 1 0 . 

Total 75,983 175,748 109,776 210,126 149,671 257,887 133,550 46,229 24,040 10,583 334 . %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2006 

Year 0 0 0 8 13 5 10 9 1 0 0 

Total 123,740 75,286 160,245 107,288 224,672 127,510 274,461 114,192 31,183 20,469 12,954 4%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2007 

Year 0 0 0 14 5 12 2 24 2 0 0 

Total 64,117 139,445 94,372 175,277 135,525 222,527 144,704 286,939 110,806 34,310 26,882 12,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2008 

Year 0 0 0 9 22 8 14 18 11 2 2 

Total 86,214 59,396 118,266 86,064 178,528 111,461 225,227 117,687 242,347 96,650 31,588 24,3%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2009 

Year 0 0 0 17 16 13 5 44 9 21 14 

Total 40,797 89,350 62,188 119,328 96,311 164,854 114,012 219,130 109,265 223,890 94,323 31,3%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2010 

Year 0 0 0 2 3 0 2 7 0 1 4 

Total 8,874 8,668 12,595 10,866 21,822 13,487 29,721 15,601 33,661 12,563 32,270 5,2%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.
D-35 

Table D-35. Number of Inspection Cycles with DTC 450 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 200

2005 

Year 7 53 71 20 10 15 1 0 0 0 0 . 

Total 75,983 175,748 109,776 210,126 149,671 257,887 133,550 46,229 24,040 10,583 334 . %w/DTC 0.0% 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2006 

Year 8 23 91 16 17 5 4 2 0 0 0 

Total 123,740 75,286 160,245 107,288 224,672 127,510 274,461 114,192 31,183 20,469 12,954 4%w/DTC 0.0% 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2007 

Year 8 17 51 30 16 13 5 4 0 0 0 

Total 64,117 139,445 94,372 175,277 135,525 222,527 144,704 286,939 110,806 34,310 26,882 12,%w/DTC 0.0% 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2008 

Year 10 11 52 11 14 9 7 2 3 1 0 

Total 86,214 59,396 118,266 86,064 178,528 111,461 225,227 117,687 242,347 96,650 31,588 24,3%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2009 

Year 8 17 24 13 11 9 1 9 2 3 0 

Total 40,797 89,350 62,188 119,328 96,311 164,854 114,012 219,130 109,265 223,890 94,323 31,3%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2010 

Year 0 1 4 3 3 1 0 0 1 0 1 

Total 8,874 8,668 12,595 10,866 21,822 13,487 29,721 15,601 33,661 12,563 32,270 5,2%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.
D-36 

Table D-36. Number of Inspection Cycles with DTC 452 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 200

2005 

Year 1 6 14 17 7 13 2 1 1 1 0 . 

Total 75,983 175,748 109,776 210,126 149,671 257,887 133,550 46,229 24,040 10,583 334 . %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2006 

Year 4 3 29 17 16 4 7 3 0 0 0 

Total 123,740 75,286 160,245 107,288 224,672 127,510 274,461 114,192 31,183 20,469 12,954 4%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2007 

Year 0 9 38 27 21 14 13 3 1 0 0 

Total 64,117 139,445 94,372 175,277 135,525 222,527 144,704 286,939 110,806 34,310 26,882 12,%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2008 

Year 1 3 45 26 24 5 13 7 9 2 0 

Total 86,214 59,396 118,266 86,064 178,528 111,461 225,227 117,687 242,347 96,650 31,588 24,3%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2009 

Year 0 2 24 47 23 17 13 16 5 8 1 

Total 40,797 89,350 62,188 119,328 96,311 164,854 114,012 219,130 109,265 223,890 94,323 31,3%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2010 

Year 0 0 2 5 5 4 2 3 2 1 1 

Total 8,874 8,668 12,595 10,866 21,822 13,487 29,721 15,601 33,661 12,563 32,270 5,2%w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.
D-37 

Table D-37. Number of Inspection Cycles with DTC 455 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 200

2005 

Year 35 380 293 311 249 877 194 46 7 6 0 

Total 75,983 175,748 109,776 210,126 149,671 257,887 133,550 46,229 24,040 10,583 334 %w/DTC 0.0% 0.2% 0.3% 0.1% 0.2% 0.3% 0.1% 0.1% 0.0% 0.1% 0.0% 

2006 

Year 48 265 470 234 462 561 835 158 24 10 7 

Total 123,740 75,286 160,245 107,288 224,672 127,510 274,461 114,192 31,183 20,469 12,954 4%w/DTC 0.0% 0.4% 0.3% 0.2% 0.2% 0.4% 0.3% 0.1% 0.1% 0.0% 0.1% 0.

2007 

Year 32 388 386 388 383 1,169 599 525 112 32 11 

Total 64,117 139,445 94,372 175,277 135,525 222,527 144,704 286,939 110,806 34,310 26,882 12,%w/DTC 0.0% 0.3% 0.4% 0.2% 0.3% 0.5% 0.4% 0.2% 0.1% 0.1% 0.0% 0.

2008 

Year 48 220 415 250 552 751 1,222 411 326 95 19 

Total 86,214 59,396 118,266 86,064 178,528 111,461 225,227 117,687 242,347 96,650 31,588 24,3%w/DTC 0.1% 0.4% 0.4% 0.3% 0.3% 0.7% 0.5% 0.3% 0.1% 0.1% 0.1% 0.

2009 

Year 27 232 297 306 332 948 651 689 240 283 93 

Total 40,797 89,350 62,188 119,328 96,311 164,854 114,012 219,130 109,265 223,890 94,323 31,3%w/DTC 0.1% 0.3% 0.5% 0.3% 0.3% 0.6% 0.6% 0.3% 0.2% 0.1% 0.1% 0.

2010 

Year 5 31 26 37 47 94 128 56 47 22 32 

Total 8,874 8,668 12,595 10,866 21,822 13,487 29,721 15,601 33,661 12,563 32,270 5,2%w/DTC 0.1% 0.4% 0.2% 0.3% 0.2% 0.7% 0.4% 0.4% 0.1% 0.2% 0.1% 0.
D-38 

Table D-38. Number of Inspection Cycles with DTC 456 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 200

2005 

Year 0 5 27 57 65 343 145 43 11 3 0 

Total 75,983 175,748 109,776 210,126 149,671 257,887 133,550 46,229 24,040 10,583 334 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 

2006 

Year 2 3 53 34 135 199 718 146 23 7 1 

Total 123,740 75,286 160,245 107,288 224,672 127,510 274,461 114,192 31,183 20,469 12,954 4%w/DTC 0.0% 0.0% 0.0% 0.0% 0.1% 0.2% 0.3% 0.1% 0.1% 0.0% 0.0% 0.

2007 

Year 1 3 66 89 113 424 371 634 107 22 5 

Total 64,117 139,445 94,372 175,277 135,525 222,527 144,704 286,939 110,806 34,310 26,882 12,%w/DTC 0.0% 0.0% 0.1% 0.1% 0.1% 0.2% 0.3% 0.2% 0.1% 0.1% 0.0% 0.

2008 

Year 1 2 80 43 192 250 902 352 248 42 15 

Total 86,214 59,396 118,266 86,064 178,528 111,461 225,227 117,687 242,347 96,650 31,588 24,3%w/DTC 0.0% 0.0% 0.1% 0.0% 0.1% 0.2% 0.4% 0.3% 0.1% 0.0% 0.0% 0.

2009 

Year 0 2 43 74 70 349 380 700 160 114 33 

Total 40,797 89,350 62,188 119,328 96,311 164,854 114,012 219,130 109,265 223,890 94,323 31,3%w/DTC 0.0% 0.0% 0.1% 0.1% 0.1% 0.2% 0.3% 0.3% 0.1% 0.1% 0.0% 0.

2010 

Year 1 0 7 10 14 27 84 52 41 9 10 

Total 8,874 8,668 12,595 10,866 21,822 13,487 29,721 15,601 33,661 12,563 32,270 5,2%w/DTC 0.0% 0.0% 0.1% 0.1% 0.1% 0.2% 0.3% 0.3% 0.1% 0.1% 0.0% 0.
D-39 

Table D-39. Number of Inspection Cycles with DTC 457 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 200

2005 

Year 3 31 243 275 20 67 20 5 2 0 0 

Total 75,983 175,748 109,776 210,126 149,671 257,887 133,550 46,229 24,040 10,583 334 %w/DTC 0.0% 0.0% 0.2% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2006 

Year 8 33 295 162 83 41 70 26 5 1 1 

Total 123,740 75,286 160,245 107,288 224,672 127,510 274,461 114,192 31,183 20,469 12,954 4%w/DTC 0.0% 0.0% 0.2% 0.2% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2007 

Year 5 58 213 269 57 86 55 110 20 4 1 

Total 64,117 139,445 94,372 175,277 135,525 222,527 144,704 286,939 110,806 34,310 26,882 12,%w/DTC 0.0% 0.0% 0.2% 0.2% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2008 

Year 7 32 224 179 105 60 85 56 50 24 4 

Total 86,214 59,396 118,266 86,064 178,528 111,461 225,227 117,687 242,347 96,650 31,588 24,3%w/DTC 0.0% 0.1% 0.2% 0.2% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.

2009 

Year 4 29 146 231 92 110 55 131 38 53 15 

Total 40,797 89,350 62,188 119,328 96,311 164,854 114,012 219,130 109,265 223,890 94,323 31,3%w/DTC 0.0% 0.0% 0.2% 0.2% 0.1% 0.1% 0.0% 0.1% 0.0% 0.0% 0.0% 0.

2010 

Year 0 2 19 26 16 11 13 9 10 5 3 

Total 8,874 8,668 12,595 10,866 21,822 13,487 29,721 15,601 33,661 12,563 32,270 5,2%w/DTC 0.0% 0.0% 0.2% 0.2% 0.1% 0.1% 0.0% 0.1% 0.0% 0.0% 0.0% 0.
D-40 

Table D-40. Number of Inspection Cycles with DTC 440 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2004 

Year 124 141 159 96 94 56 20 9 1 0 . . 

Total 42,813 40,020 52,811 37,864 63,342 29,961 19,182 13,428 7,684 153 . . %w/DTC 0.3% 0.4% 0.3% 0.3% 0.1% 0.2% 0.1% 0.1% 0.0% 0.0% . . 

2005 

Year 105 137 149 130 79 97 37 10 0 1 0 . 

Total 27,135 37,127 32,263 41,566 33,742 47,631 23,498 11,683 9,348 4,531 74 . %w/DTC 0.4% 0.4% 0.5% 0.3% 0.2% 0.2% 0.2% 0.1% 0.0% 0.0% 0.0% . 

2006 

Year 126 165 205 171 129 100 97 25 9 1 0 0 

Total 30,410 32,824 42,526 35,454 51,593 33,310 58,757 19,504 10,038 8,644 3,640 98 %w/DTC 0.4% 0.5% 0.5% 0.5% 0.3% 0.3% 0.2% 0.1% 0.1% 0.0% 0.0% 0.0% 

2007 

Year 132 170 183 174 125 143 74 73 12 1 0 0 

Total 22,893 32,469 31,633 39,706 35,112 44,220 31,817 50,547 16,605 8,135 6,195 2,887 %w/DTC 0.6% 0.5% 0.6% 0.4% 0.4% 0.3% 0.2% 0.1% 0.1% 0.0% 0.0% 0.0% 

2008 

Year 126 154 225 156 151 126 114 59 39 3 0 0 

Total 23,025 25,756 32,019 29,129 38,462 28,627 41,004 23,270 45,643 13,198 6,312 5,482 %w/DTC 0.5% 0.6% 0.7% 0.5% 0.4% 0.4% 0.3% 0.3% 0.1% 0.0% 0.0% 0.0% 

2009 

Year 147 189 258 241 198 202 126 110 24 8 2 0 

Total 22,991 32,073 31,006 37,555 34,948 42,122 32,518 43,440 24,059 50,840 12,335 5,816 %w/DTC 0.6% 0.6% 0.8% 0.6% 0.6% 0.5% 0.4% 0.3% 0.1% 0.0% 0.0% 0.0% 

2010 

Year 201 305 347 266 225 248 216 123 73 4 13 3 

Total 26,680 30,744 37,843 34,740 45,235 36,062 47,770 30,368 45,844 25,094 49,966 12,656 %w/DTC 0.8% 1.0% 0.9% 0.8% 0.5% 0.7% 0.5% 0.4% 0.2% 0.0% 0.0% 0.0% 

2011 

Year 206 348 383 420 295 368 267 246 79 22 11 10 

Total 24,780 41,134 36,204 49,546 42,174 54,295 40,382 54,101 32,748 58,337 33,885 60,414 %w/DTC 0.8% 0.8% 1.1% 0.8% 0.7% 0.7% 0.7% 0.5% 0.2% 0.0% 0.0% 0.0% 
D-41 

Table D-41. Number of Inspection Cycles with DTC 441 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2004 

Year 150 89 41 24 48 25 12 5 4 0 . . 

Total 39,980 36,292 49,093 34,875 59,763 27,702 18,151 12,524 7,131 135 . . %w/DTC 0.4% 0.2% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.1% 0.0% . . 

2005 

Year 122 83 37 24 23 51 30 6 5 1 0 . 

Total 24,512 33,229 28,801 38,007 30,625 44,354 21,698 10,902 8,631 4,124 59 . %w/DTC 0.5% 0.2% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% . 

2006 

Year 131 110 59 23 52 46 68 14 15 2 0 0 

Total 27,920 29,204 38,540 32,057 47,915 30,771 56,159 18,290 9,471 8,091 3,326 82 %w/DTC 0.5% 0.4% 0.2% 0.1% 0.1% 0.1% 0.1% 0.1% 0.2% 0.0% 0.0% 0.0% 

2007 

Year 135 121 45 39 48 64 43 94 23 8 5 0 

Total 20,569 28,735 27,859 35,803 31,537 40,804 29,411 47,946 15,368 7,587 5,707 2,636 %w/DTC 0.7% 0.4% 0.2% 0.1% 0.2% 0.2% 0.1% 0.2% 0.1% 0.1% 0.1% 0.0% 

2008 

Year 135 131 51 52 56 72 83 60 83 17 1 1 

Total 20,393 21,900 27,664 25,105 34,333 25,433 37,983 21,320 43,360 11,950 5,768 5,075 %w/DTC 0.7% 0.6% 0.2% 0.2% 0.2% 0.3% 0.2% 0.3% 0.2% 0.1% 0.0% 0.0% 

2009 

Year 153 170 67 60 65 75 92 128 48 83 6 5 

Total 19,979 27,398 26,041 32,468 30,261 37,899 29,272 40,594 22,314 48,482 11,162 5,362 %w/DTC 0.8% 0.6% 0.3% 0.2% 0.2% 0.2% 0.3% 0.3% 0.2% 0.2% 0.1% 0.1% 

2010 

Year 219 172 86 79 75 106 149 109 120 57 57 3 

Total 23,198 25,460 31,671 29,009 39,278 31,098 43,194 27,237 42,972 23,179 47,335 11,499 %w/DTC 0.9% 0.7% 0.3% 0.3% 0.2% 0.3% 0.3% 0.4% 0.3% 0.2% 0.1% 0.0% 

2011 

Year 211 296 107 95 93 140 136 228 108 131 69 45 

Total 21,199 34,395 29,383 41,656 35,198 47,302 35,131 49,151 29,687 54,786 31,436 57,766 %w/DTC 1.0% 0.9% 0.4% 0.2% 0.3% 0.3% 0.4% 0.5% 0.4% 0.2% 0.2% 0.1% 
D-42 

Table D-42. Number of Inspection Cycles with DTC 442 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2004 

Year 49 71 56 47 147 79 40 14 14 0 . . 

Total 39,980 36,292 49,093 34,875 59,763 27,702 18,151 12,524 7,131 135 . . %w/DTC 0.1% 0.2% 0.1% 0.1% 0.2% 0.3% 0.2% 0.1% 0.2% 0.0% . . 

2005 

Year 34 65 54 44 124 139 59 30 13 3 0 . 

Total 24,512 33,229 28,801 38,007 30,625 44,354 21,698 10,902 8,631 4,124 59 . %w/DTC 0.1% 0.2% 0.2% 0.1% 0.4% 0.3% 0.3% 0.3% 0.2% 0.1% 0.0% . 

2006 

Year 42 86 68 54 240 219 226 61 21 7 1 1 

Total 27,920 29,204 38,540 32,057 47,915 30,771 56,159 18,290 9,471 8,091 3,326 82 %w/DTC 0.2% 0.3% 0.2% 0.2% 0.5% 0.7% 0.4% 0.3% 0.2% 0.1% 0.0% 1.2% 

2007 

Year 32 69 88 64 276 325 253 232 46 11 4 0 

Total 20,569 28,735 27,859 35,803 31,537 40,804 29,411 47,946 15,368 7,587 5,707 2,636 %w/DTC 0.2% 0.2% 0.3% 0.2% 0.9% 0.8% 0.9% 0.5% 0.3% 0.1% 0.1% 0.0% 

2008 

Year 42 89 92 75 278 282 317 168 154 23 7 1 

Total 20,393 21,900 27,664 25,105 34,333 25,433 37,983 21,320 43,360 11,950 5,768 5,075 %w/DTC 0.2% 0.4% 0.3% 0.3% 0.8% 1.1% 0.8% 0.8% 0.4% 0.2% 0.1% 0.0% 

2009 

Year 43 110 143 116 333 407 406 349 127 117 9 3 

Total 19,979 27,398 26,041 32,468 30,261 37,899 29,272 40,594 22,314 48,482 11,162 5,362 %w/DTC 0.2% 0.4% 0.5% 0.4% 1.1% 1.1% 1.4% 0.9% 0.6% 0.2% 0.1% 0.1% 

2010 

Year 46 127 157 139 411 455 548 355 233 70 84 10 

Total 23,198 25,460 31,671 29,009 39,278 31,098 43,194 27,237 42,972 23,179 47,335 11,499 %w/DTC 0.2% 0.5% 0.5% 0.5% 1.0% 1.5% 1.3% 1.3% 0.5% 0.3% 0.2% 0.1% 

2011 

Year 51 196 194 175 413 682 704 700 243 183 67 60 

Total 21,199 34,395 29,383 41,656 35,198 47,302 35,131 49,151 29,687 54,786 31,436 57,766 %w/DTC 0.2% 0.6% 0.7% 0.4% 1.2% 1.4% 2.0% 1.4% 0.8% 0.3% 0.2% 0.1% 
D-43 

Table D-43. Number of Inspection Cycles with DTC 443 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2004 

Year 340 252 19 4 9 2 1 0 0 0 . . 

Total 39,980 36,292 49,093 34,875 59,763 27,702 18,151 12,524 7,131 135 . . %w/DTC 0.9% 0.7% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . . 

2005 

Year 288 286 16 9 4 14 1 3 2 0 0 . 

Total 24,512 33,229 28,801 38,007 30,625 44,354 21,698 10,902 8,631 4,124 59 . %w/DTC 1.2% 0.9% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2006 

Year 360 336 48 17 15 10 16 1 0 0 0 0 

Total 27,920 29,204 38,540 32,057 47,915 30,771 56,159 18,290 9,471 8,091 3,326 82 %w/DTC 1.3% 1.2% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2007 

Year 359 382 31 27 20 11 10 12 4 0 0 0 

Total 20,569 28,735 27,859 35,803 31,537 40,804 29,411 47,946 15,368 7,587 5,707 2,636 %w/DTC 1.7% 1.3% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2008 

Year 355 357 69 32 18 21 21 14 10 1 0 0 

Total 20,393 21,900 27,664 25,105 34,333 25,433 37,983 21,320 43,360 11,950 5,768 5,075 %w/DTC 1.7% 1.6% 0.2% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 

2009 

Year 370 418 46 25 27 39 22 19 10 5 1 0 

Total 19,979 27,398 26,041 32,468 30,261 37,899 29,272 40,594 22,314 48,482 11,162 5,362 %w/DTC 1.9% 1.5% 0.2% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 

2010 

Year 418 449 73 36 50 35 42 14 12 3 8 0 

Total 23,198 25,460 31,671 29,009 39,278 31,098 43,194 27,237 42,972 23,179 47,335 11,499 %w/DTC 1.8% 1.8% 0.2% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 

2011 

Year 485 664 85 41 45 66 30 37 13 9 13 3 

Total 21,199 34,395 29,383 41,656 35,198 47,302 35,131 49,151 29,687 54,786 31,436 57,766 %w/DTC 2.3% 1.9% 0.3% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 
D-44 

Table D-44. Number of Inspection Cycles with DTC 446 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2004 

Year 54 55 40 22 41 16 20 3 3 0 . . 

Total 39,980 36,292 49,093 34,875 59,763 27,702 18,151 12,524 7,131 135 . . %w/DTC 0.1% 0.2% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% . . 

2005 

Year 27 94 37 34 23 54 18 9 4 0 0 . 

Total 24,512 33,229 28,801 38,007 30,625 44,354 21,698 10,902 8,631 4,124 59 . %w/DTC 0.1% 0.3% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% . 

2006 

Year 47 80 55 33 54 27 80 14 14 0 0 0 

Total 27,920 29,204 38,540 32,057 47,915 30,771 56,159 18,290 9,471 8,091 3,326 82 %w/DTC 0.2% 0.3% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 

2007 

Year 49 86 61 54 52 60 45 81 18 2 1 0 

Total 20,569 28,735 27,859 35,803 31,537 40,804 29,411 47,946 15,368 7,587 5,707 2,636 %w/DTC 0.2% 0.3% 0.2% 0.2% 0.2% 0.1% 0.2% 0.2% 0.1% 0.0% 0.0% 0.0% 

2008 

Year 49 82 67 60 48 65 79 33 58 3 1 0 

Total 20,393 21,900 27,664 25,105 34,333 25,433 37,983 21,320 43,360 11,950 5,768 5,075 %w/DTC 0.2% 0.4% 0.2% 0.2% 0.1% 0.3% 0.2% 0.2% 0.1% 0.0% 0.0% 0.0% 

2009 

Year 44 96 82 90 54 59 89 77 43 18 0 0 

Total 19,979 27,398 26,041 32,468 30,261 37,899 29,272 40,594 22,314 48,482 11,162 5,362 %w/DTC 0.2% 0.4% 0.3% 0.3% 0.2% 0.2% 0.3% 0.2% 0.2% 0.0% 0.0% 0.0% 

2010 

Year 70 118 100 120 73 83 107 52 92 12 7 2 

Total 23,198 25,460 31,671 29,009 39,278 31,098 43,194 27,237 42,972 23,179 47,335 11,499 %w/DTC 0.3% 0.5% 0.3% 0.4% 0.2% 0.3% 0.2% 0.2% 0.2% 0.1% 0.0% 0.0% 

2011 

Year 75 154 137 163 93 125 127 105 67 49 12 6 

Total 21,199 34,395 29,383 41,656 35,198 47,302 35,131 49,151 29,687 54,786 31,436 57,766 %w/DTC 0.4% 0.4% 0.5% 0.4% 0.3% 0.3% 0.4% 0.2% 0.2% 0.1% 0.0% 0.0% 
D-45 

Table D-45. Number of Inspection Cycles with DTC 447 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2004 

Year 17 104 3 2 . 2 1 0 0 0 . . 

Total 39,980 36,292 49,093 34,875 59,763 27,702 18,151 12,524 7,131 135 . . %w/DTC 0.0% 0.3% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . . 

2005 

Year 20 97 8 1 . 4 0 0 0 0 0 . 

Total 24,512 33,229 28,801 38,007 30,625 44,354 21,698 10,902 8,631 4,124 59 . %w/DTC 0.1% 0.3% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2006 

Year 14 106 7 1 . 4 2 0 0 0 0 0 

Total 27,920 29,204 38,540 32,057 47,915 30,771 56,159 18,290 9,471 8,091 3,326 82 %w/DTC 0.1% 0.4% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2007 

Year 16 106 16 1 2 1 2 2 2 0 0 0 

Total 20,569 28,735 27,859 35,803 31,537 40,804 29,411 47,946 15,368 7,587 5,707 2,636 %w/DTC 0.1% 0.4% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2008 

Year 19 111 14 3 4 5 3 . 1 0 0 0 

Total 20,393 21,900 27,664 25,105 34,333 25,433 37,983 21,320 43,360 11,950 5,768 5,075 %w/DTC 0.1% 0.5% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2009 

Year 15 145 25 4 1 . 7 4 2 0 0 1 

Total 19,979 27,398 26,041 32,468 30,261 37,899 29,272 40,594 22,314 48,482 11,162 5,362 %w/DTC 0.1% 0.5% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2010 

Year 29 164 33 7 2 4 3 5 7 0 2 0 

Total 23,198 25,460 31,671 29,009 39,278 31,098 43,194 27,237 42,972 23,179 47,335 11,499 %w/DTC 0.1% 0.6% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2011 

Year 34 264 31 7 7 8 5 4 2 1 0 2 

Total 21,199 34,395 29,383 41,656 35,198 47,302 35,131 49,151 29,687 54,786 31,436 57,766 %w/DTC 0.2% 0.8% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 
D-46 

Table D-46. Number of Inspection Cycles with DTC 448 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2004 

Year 0 0 13 3 0 3 1 1 0 0 . . 

Total 39,980 36,292 49,093 34,875 59,763 27,702 18,151 12,524 7,131 135 . . %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . . 

2005 

Year 0 0 13 1 3 5 2 1 0 0 0 . 

Total 24,512 33,229 28,801 38,007 30,625 44,354 21,698 10,902 8,631 4,124 59 . %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2006 

Year 0 0 13 2 2 5 6 4 0 0 0 0 

Total 27,920 29,204 38,540 32,057 47,915 30,771 56,159 18,290 9,471 8,091 3,326 82 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2007 

Year 0 0 6 5 5 8 8 11 0 0 0 0 

Total 20,569 28,735 27,859 35,803 31,537 40,804 29,411 47,946 15,368 7,587 5,707 2,636 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2008 

Year 0 0 20 8 6 5 10 4 1 0 2 1 

Total 20,393 21,900 27,664 25,105 34,333 25,433 37,983 21,320 43,360 11,950 5,768 5,075 %w/DTC 0.0% 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2009 

Year 0 0 23 5 5 5 15 5 0 0 1 0 

Total 19,979 27,398 26,041 32,468 30,261 37,899 29,272 40,594 22,314 48,482 11,162 5,362 %w/DTC 0.0% 0.0% 0.1% 0.0% 0.0% 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 

2010 

Year 0 0 23 6 7 12 17 8 3 0 3 1 

Total 23,198 25,460 31,671 29,009 39,278 31,098 43,194 27,237 42,972 23,179 47,335 11,499 %w/DTC 0.0% 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2011 

Year 0 1 31 16 12 16 19 14 2 0 5 5 

Total 21,199 34,395 29,383 41,656 35,198 47,302 35,131 49,151 29,687 54,786 31,436 57,766 %w/DTC 0.0% 0.0% 0.1% 0.0% 0.0% 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 
D-47 

Table D-47. Number of Inspection Cycles with DTC 449 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2004 

Year 0 0 0 1 3 0 0 0 0 0 . . 

Total 39,980 36,292 49,093 34,875 59,763 27,702 18,151 12,524 7,131 135 . . %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . . 

2005 

Year 0 0 0 2 2 3 1 . 1 0 0 . 

Total 24,512 33,229 28,801 38,007 30,625 44,354 21,698 10,902 8,631 4,124 59 . %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2006 

Year 0 0 0 4 6 . 1 1 1 0 0 0 

Total 27,920 29,204 38,540 32,057 47,915 30,771 56,159 18,290 9,471 8,091 3,326 82 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2007 

Year 0 0 0 4 7 8 4 4 7 0 0 0 

Total 20,569 28,735 27,859 35,803 31,537 40,804 29,411 47,946 15,368 7,587 5,707 2,636 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2008 

Year 0 0 0 3 5 4 5 3 14 1 1 0 

Total 20,393 21,900 27,664 25,105 34,333 25,433 37,983 21,320 43,360 11,950 5,768 5,075 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2009 

Year . . . 7 5 11 9 7 12 3 1 1 

Total 19,979 27,398 26,041 32,468 30,261 37,899 29,272 40,594 22,314 48,482 11,162 5,362 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.1% 0.0% 0.0% 0.0% 

2010 

Year 0 0 1 5 8 12 11 11 22 5 3 3 

Total 23,198 25,460 31,671 29,009 39,278 31,098 43,194 27,237 42,972 23,179 47,335 11,499 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.1% 0.0% 0.0% 0.0% 

2011 

Year 0 0 0 9 15 17 11 14 20 16 7 7 

Total 21,199 34,395 29,383 41,656 35,198 47,302 35,131 49,151 29,687 54,786 31,436 57,766 %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.1% 0.0% 0.0% 0.0% 
D-48 

Table D-48. Number of Inspection Cycles with DTC 450 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2004 

Year 17 12 23 3 20 6 0 0 0 0 . . 

Total 39,980 36,292 49,093 34,875 59,763 27,702 18,151 12,524 7,131 135 . . %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . . 

2005 

Year 9 17 16 8 15 17 1 0 0 0 0 . 

Total 24,512 33,229 28,801 38,007 30,625 44,354 21,698 10,902 8,631 4,124 59 . %w/DTC 0.0% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2006 

Year 12 18 26 5 33 15 . 1 0 0 0 0 

Total 27,920 29,204 38,540 32,057 47,915 30,771 56,159 18,290 9,471 8,091 3,326 82 %w/DTC 0.0% 0.1% 0.1% 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2007 

Year 8 20 30 10 18 26 1 . 2 0 0 0 

Total 20,569 28,735 27,859 35,803 31,537 40,804 29,411 47,946 15,368 7,587 5,707 2,636 %w/DTC 0.0% 0.1% 0.1% 0.0% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2008 

Year 13 16 24 2 41 19 2 3 3 0 0 0 

Total 20,393 21,900 27,664 25,105 34,333 25,433 37,983 21,320 43,360 11,950 5,768 5,075 %w/DTC 0.1% 0.1% 0.1% 0.0% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2009 

Year 5 14 28 11 15 17 8 3 1 1 2 0 

Total 19,979 27,398 26,041 32,468 30,261 37,899 29,272 40,594 22,314 48,482 11,162 5,362 %w/DTC 0.0% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2010 

Year 11 16 30 4 36 17 2 7 2 1 5 1 

Total 23,198 25,460 31,671 29,009 39,278 31,098 43,194 27,237 42,972 23,179 47,335 11,499 %w/DTC 0.0% 0.1% 0.1% 0.0% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2011 

Year 17 45 46 14 19 36 11 7 3 3 2 4 

Total 21,199 34,395 29,383 41,656 35,198 47,302 35,131 49,151 29,687 54,786 31,436 57,766 %w/DTC 0.1% 0.1% 0.2% 0.0% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 
D-49 

Table D-49. Number of Inspection Cycles with DTC 452 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2004 

Year 1 1 13 9 10 8 3 0 0 0 . . 

Total 39,980 36,292 49,093 34,875 59,763 27,702 18,151 12,524 7,131 135 . . %w/DTC 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . . 

2005 

Year 0 0 29 17 16 8 4 1 0 0 . . 

Total 24,512 33,229 28,801 38,007 30,625 44,354 21,698 10,902 8,631 4,124 59 . %w/DTC 0.0% 0.0% 0.1% 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% . 

2006 

Year 0 0 63 48 52 11 2 1 0 0 0 0 

Total 27,920 29,204 38,540 32,057 47,915 30,771 56,159 18,290 9,471 8,091 3,326 82 %w/DTC 0.0% 0.0% 0.2% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2007 

Year 0 1 93 60 55 24 13 4 1 0 0 2 

Total 20,569 28,735 27,859 35,803 31,537 40,804 29,411 47,946 15,368 7,587 5,707 2,636 %w/DTC 0.0% 0.0% 0.3% 0.2% 0.2% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.1% 

2008 

Year 1 1 86 75 58 24 10 3 6 1 0 0 

Total 20,393 21,900 27,664 25,105 34,333 25,433 37,983 21,320 43,360 11,950 5,768 5,075 %w/DTC 0.0% 0.0% 0.3% 0.3% 0.2% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2009 

Year 0 1 105 93 86 31 9 5 7 4 1 1 

Total 19,979 27,398 26,041 32,468 30,261 37,899 29,272 40,594 22,314 48,482 11,162 5,362 %w/DTC 0.0% 0.0% 0.4% 0.3% 0.3% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2010 

Year 2 1 145 117 99 40 21 9 8 7 1 2 

Total 23,198 25,460 31,671 29,009 39,278 31,098 43,194 27,237 42,972 23,179 47,335 11,499 %w/DTC 0.0% 0.0% 0.5% 0.4% 0.3% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 

2011 

Year 1 1 157 142 131 55 28 12 1 6 1 3 

Total 21,199 34,395 29,383 41,656 35,198 47,302 35,131 49,151 29,687 54,786 31,436 57,766 %w/DTC 0.0% 0.0% 0.5% 0.3% 0.4% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 
D-50 

Table D-50. Number of Inspection Cycles with DTC 455 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2004 

Year 13 96 91 60 95 95 42 10 1 0 . . 

Total 39,980 36,292 49,093 34,875 59,763 27,702 18,151 12,524 7,131 135 . . %w/DTC 0.0% 0.3% 0.2% 0.2% 0.2% 0.3% 0.2% 0.1% 0.0% 0.0% . . 

2005 

Year 8 130 69 95 78 174 50 15 12 7 0 . 

Total 24,512 33,229 28,801 38,007 30,625 44,354 21,698 10,902 8,631 4,124 59 . %w/DTC 0.0% 0.4% 0.2% 0.2% 0.3% 0.4% 0.2% 0.1% 0.1% 0.2% 0.0% . 

2006 

Year 12 140 113 83 111 224 217 35 27 18 7 1 

Total 27,920 29,204 38,540 32,057 47,915 30,771 56,159 18,290 9,471 8,091 3,326 82 %w/DTC 0.0% 0.5% 0.3% 0.3% 0.2% 0.7% 0.4% 0.2% 0.3% 0.2% 0.2% 1.2% 

2007 

Year 16 132 97 91 121 256 229 124 46 16 8 2 

Total 20,569 28,735 27,859 35,803 31,537 40,804 29,411 47,946 15,368 7,587 5,707 2,636 %w/DTC 0.1% 0.5% 0.3% 0.3% 0.4% 0.6% 0.8% 0.3% 0.3% 0.2% 0.1% 0.1% 

2008 

Year 16 134 112 91 115 241 274 94 152 36 20 11 

Total 20,393 21,900 27,664 25,105 34,333 25,433 37,983 21,320 43,360 11,950 5,768 5,075 %w/DTC 0.1% 0.6% 0.4% 0.4% 0.3% 0.9% 0.7% 0.4% 0.4% 0.3% 0.3% 0.2% 

2009 

Year 24 177 131 145 121 290 368 177 147 185 37 18 

Total 19,979 27,398 26,041 32,468 30,261 37,899 29,272 40,594 22,314 48,482 11,162 5,362 %w/DTC 0.1% 0.6% 0.5% 0.4% 0.4% 0.8% 1.3% 0.4% 0.7% 0.4% 0.3% 0.3% 

2010 

Year 24 182 177 124 189 394 499 219 252 163 165 28 

Total 23,198 25,460 31,671 29,009 39,278 31,098 43,194 27,237 42,972 23,179 47,335 11,499 %w/DTC 0.1% 0.7% 0.6% 0.4% 0.5% 1.3% 1.2% 0.8% 0.6% 0.7% 0.3% 0.2% 

2011 

Year 32 261 169 219 205 631 609 398 243 313 167 173 

Total 21,199 34,395 29,383 41,656 35,198 47,302 35,131 49,151 29,687 54,786 31,436 57,766 %w/DTC 0.2% 0.8% 0.6% 0.5% 0.6% 1.3% 1.7% 0.8% 0.8% 0.6% 0.5% 0.3% 
D-51 

Table D-51. Number of Inspection Cycles with DTC 456 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2004 

Year 3 6 123 115 181 78 74 14 3 0 . . 

Total 39,980 36,292 49,093 34,875 59,763 27,702 18,151 12,524 7,131 135 . . %w/DTC 0.0% 0.0% 0.3% 0.3% 0.3% 0.3% 0.4% 0.1% 0.0% 0.0% . . 

2005 

Year 3 2 89 141 85 193 128 39 6 1 0 . 

Total 24,512 33,229 28,801 38,007 30,625 44,354 21,698 10,902 8,631 4,124 59 . %w/DTC 0.0% 0.0% 0.3% 0.4% 0.3% 0.4% 0.6% 0.4% 0.1% 0.0% 0.0% . 

2006 

Year 1 8 126 116 158 180 542 82 23 7 0 0 

Total 27,920 29,204 38,540 32,057 47,915 30,771 56,159 18,290 9,471 8,091 3,326 82 %w/DTC 0.0% 0.0% 0.3% 0.4% 0.3% 0.6% 1.0% 0.4% 0.2% 0.1% 0.0% 0.0% 

2007 

Year 1 8 115 159 97 253 311 310 51 13 8 5 

Total 20,569 28,735 27,859 35,803 31,537 40,804 29,411 47,946 15,368 7,587 5,707 2,636 %w/DTC 0.0% 0.0% 0.4% 0.4% 0.3% 0.6% 1.1% 0.6% 0.3% 0.2% 0.1% 0.2% 

2008 

Year 3 2 120 99 133 189 391 139 216 30 11 9 

Total 20,393 21,900 27,664 25,105 34,333 25,433 37,983 21,320 43,360 11,950 5,768 5,075 %w/DTC 0.0% 0.0% 0.4% 0.4% 0.4% 0.7% 1.0% 0.7% 0.5% 0.3% 0.2% 0.2% 

2009 

Year 4 11 117 161 134 300 377 298 112 138 21 13 

Total 19,979 27,398 26,041 32,468 30,261 37,899 29,272 40,594 22,314 48,482 11,162 5,362 %w/DTC 0.0% 0.0% 0.4% 0.5% 0.4% 0.8% 1.3% 0.7% 0.5% 0.3% 0.2% 0.2% 

2010 

Year 4 13 162 133 182 266 583 242 302 97 106 16 

Total 23,198 25,460 31,671 29,009 39,278 31,098 43,194 27,237 42,972 23,179 47,335 11,499 %w/DTC 0.0% 0.1% 0.5% 0.5% 0.5% 0.9% 1.3% 0.9% 0.7% 0.4% 0.2% 0.1% 

2011 

Year 1 20 192 208 146 442 528 456 232 191 85 120 

Total 21,199 34,395 29,383 41,656 35,198 47,302 35,131 49,151 29,687 54,786 31,436 57,766 %w/DTC 0.0% 0.1% 0.7% 0.5% 0.4% 0.9% 1.5% 0.9% 0.8% 0.3% 0.3% 0.2% 
D-52 

Table D-52. Number of Inspection Cycles with DTC 457 Set, by Model Year and IM Calendar 

Calendar 

Year Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2004 

Year 0 5 32 35 31 19 12 6 6 0 . . 

Total 39,980 36,292 49,093 34,875 59,763 27,702 18,151 12,524 7,131 135 . . %w/DTC 0.0% 0.0% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% 0.1% 0.0% . . 

2005 

Year 0 6 30 32 14 36 17 9 4 2 0 . 

Total 24,512 33,229 28,801 38,007 30,625 44,354 21,698 10,902 8,631 4,124 59 . %w/DTC 0.0% 0.0% 0.1% 0.1% 0.0% 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% . 

2006 

Year 0 10 59 57 44 33 56 34 16 4 1 0 

Total 27,920 29,204 38,540 32,057 47,915 30,771 56,159 18,290 9,471 8,091 3,326 82 %w/DTC 0.0% 0.0% 0.2% 0.2% 0.1% 0.1% 0.1% 0.2% 0.2% 0.0% 0.0% 0.0% 

2007 

Year 2 12 39 59 27 49 35 105 36 9 3 1 

Total 20,569 28,735 27,859 35,803 31,537 40,804 29,411 47,946 15,368 7,587 5,707 2,636 %w/DTC 0.0% 0.0% 0.1% 0.2% 0.1% 0.1% 0.1% 0.2% 0.2% 0.1% 0.1% 0.0% 

2008 

Year 1 12 40 47 46 45 65 44 109 23 5 11 

Total 20,393 21,900 27,664 25,105 34,333 25,433 37,983 21,320 43,360 11,950 5,768 5,075 %w/DTC 0.0% 0.1% 0.1% 0.2% 0.1% 0.2% 0.2% 0.2% 0.3% 0.2% 0.1% 0.2% 

2009 

Year 4 17 60 81 35 68 55 94 44 86 27 7 

Total 19,979 27,398 26,041 32,468 30,261 37,899 29,272 40,594 22,314 48,482 11,162 5,362 %w/DTC 0.0% 0.1% 0.2% 0.2% 0.1% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.1% 

2010 

Year 6 24 72 88 65 86 96 54 124 60 82 27 

Total 23,198 25,460 31,671 29,009 39,278 31,098 43,194 27,237 42,972 23,179 47,335 11,499 %w/DTC 0.0% 0.1% 0.2% 0.3% 0.2% 0.3% 0.2% 0.2% 0.3% 0.3% 0.2% 0.2% 

2011 

Year 2 26 77 137 69 130 123 128 75 110 69 67 

Total 21,199 34,395 29,383 41,656 35,198 47,302 35,131 49,151 29,687 54,786 31,436 57,766 %w/DTC 0.0% 0.1% 0.3% 0.3% 0.2% 0.3% 0.4% 0.3% 0.3% 0.2% 0.2% 0.1% 
Appendix E 

Tables of Most Common Evap DTCs and DTC Combinations Set for Each State 
E-1 

Table E-1. For All Test Cycles With Evap Monitor Ready: 

Evap DTCs Most Commonly Found in State A Data 

# of 

Evap 

codes

Specific P0 and 

P1 codes set

Generic description of DTCs 

set

Number of 

occurrences Percentage

Cumulative 

percent

1 P_456 Small leak detected 120,262 20.6% 20.6%

1 P_455 Gross leak 97,505 16.7% 37.3%

1 P_442 Small leak 86,979 14.9% 52.2%

1 P_443 Purge control valve circuit 53,488 9.2% 61.3%

1 P_440 Evap system malfunction 50,167 8.6% 69.9%

1 P_441 Incorrect purge flow 39,597 6.8% 76.7%

1 P_446 

Vent control circuit 

malfunction 31,168 5.3% 82.0%

1 P_457 System leak detected 20,188 3.5% 85.5%

2 P_442 and P_455 Small leak and gross leak 12,203 2.1% 87.6%

3

P_440, P_441, 

and P_446 

Evap system malfunction, 

incorrect purge flow, and vent 

control circuit malfunction 10,062 1.7% 89.3%

1 P_452 Pressure sensor low input 9,718 1.7% 91.0%

Multiple

Other Evap DTC 

set as 1 or 2 or 3 

or more DTCs 

together

less than 5,000 in each 

instance 52,749 9.0% 100.0%

 

 Total 584,086 

 
E-2 

Table E-2. For All Test Cycles With Evap Monitor Ready: 

Evap DTCs Most Commonly Found in State B Data 

# of 

Evap 

codes

Specific P0 and 

P1 codes set

Generic description of DTCs 

set

Number of 

occurrences Percentage

Cumulative 

percent

1 P_455 Gross leak 10,239 16.9% 16.9%

1 P_442 Small leak 8,902 14.7% 31.6%

1 P_440 Evap system malfunction 7,436 12.3% 43.9%

1 P_456 Small leak detected 5,240 8.7% 52.6%

1 P_441 Incorrect purge flow 4,702 7.8% 60.3%

1 P_443 Purge control valve circuit 3,446 5.7% 66.0%

1 P_446 

Vent control circuit 

malfunction 3,134 5.2% 71.2%

2 P_442 and P_455 Small leak and gross leak 2,386 3.9% 75.1%

3

P_440, P_441, 

and P_446 

Evap system malfunction, 

incorrect purge flow, and vent 

control circuit malfunction 1,743 2.9% 78.0%

1 P_457 System leak detected 1,418 2.3% 80.4%

2 P_442 and P_456 

Small leak and small leak 

detected 916 1.5% 81.9%

3

P_442, P_455, 

and P_456 

Small leak, gross leak, and 

small leak detected 879 1.5% 83.3%

1 P_452 Pressure sensor low input 633 1.0% 84.4%

3 P_441 and P_446 

Incorrect purge flow, and vent 

control circuit malfunction 535 0.9% 85.3%

Multiple

Other Evap DTC 

set as 1 or 2 or 3 

or more DTCs 

together less than 500 in each instance 8,928 14.7% 100.0%

 

 Total 60,537 

 
E-3 

Table E-3. For All Test Cycles With Evap Monitor Ready: 

Evap DTCs Most Commonly Found in State C Data 

# of Evap 

codes

Specific P0 and 

P1 codes set

Generic description of DTCs 

set

Number of 

occurrences

Percentage

of evap 

codes

Cumulative 

percentage of 

evap codes

1 P_455 Gross leak 11,855 16.6% 16.6%

1 P_442 Small leak 9,274 13.0% 29.6%

1 P_440 Evap system malfunction 8,097 11.3% 40.9%

1 P_441 Incorrect purge flow 5,788 8.1% 49.0%

1 P_443 

Incorrect evaporative system 

purge control valve flow 5,160 7.2% 56.3%

1 P_456 Small leak detected 4,656 6.5% 62.8%

2 P_446 

Vent control circuit 

malfunction 4,035 5.7% 68.4%

1 P_442 and P_455 Small leak and gross leak 3,549 5.0% 73.4%

1 P_457 System leak detected 3,488 4.9% 78.3%

1

P_440, P_441, 

and P_446 

Evap system malfunction, 

incorrect purge flow, and vent 

control circuit malfunction 1,727 2.4% 80.7%

3 P_441 and P_446 

Incorrect purge flow, and vent 

control circuit malfunction 1,686 2.4% 83.1%

3

P_442, P_455, 

and P_456 

Small leak, gross leak, and 

small leak detected 1,519 2.1% 85.2%

3 P_440 and P_446 

Evap system malfunction and 

vent control circuit 

malfunction 1,389 1.9% 87.1%

2 P_442 and P_456 

Small leak and small leak 

detected 1,175 1.6% 88.8%

2 P_440 and P_448 

Evap system malfunction and

evap canister vent control 

valve open 1,169 1.6% 90.4%

Multiple

Other Evap DTC 

set as 1 or 2 or 3 

or more DTCs 

together less than 500 in each instance 6,835 9.6% 100.0%

Total 71,402

 
E-4 

Table E-4. For All Test Cycles With Evap Monitor Ready: 

Evap DTCs Most Commonly Found in State D Data 

# of 

Evap 

codes

Specific P0 and 

P1 codes set

Generic description of DTCs 

set

Number of 

occurrences Percentage

Cumulative 

percent

1 P_442 Small leak 9,451 14.2% 14.2%

1 P_456 Small leak detected 9,438 14.2% 28.4%

1 P_455 Gross leak 8,459 12.7% 41.1%

1 P_440 Evap system malfunction 8,087 12.2% 53.3%

1 P_443 Purge control valve circuit 6,929 10.4% 63.7%

1 P_441 Incorrect purge flow 4,446 6.7% 70.4%

1 P_457 System leak detected 3,199 4.8% 75.2%

1 P_446 

Vent control circuit 

malfunction 2,598 3.9% 79.1%

1 P_452 Pressure sensor low input 1,677 2.5% 81.7%

2 P_442 and P_455 Small leak and gross leak 1,580 2.4% 84.0%

1 P_447 Vent control circuit open 1,284 1.9% 86.0%

3 

P_442, P_455, 

and P_456 

Small leak, gross leak, and 

small leak detected 913 1.4% 87.3%

1 P_450 Pressure sensor malfunction 695 1.0% 88.4%

3 

P_440, P_441, 

and P_446 

Evap system malfunction, 

incorrect purge flow, and vent 

control circuit malfunction 693 1.0% 89.4%

Multiple

Other Evap DTC 

set as 1 or 2 or 3 

or more DTCs 

together less than 500 in each instance 7,021 10.6% 100.0%

 

 Total 66,470 
E-5 

Table E-5. For All Test Cycles with Evap Monitor Ready: Percent of all Leak-Related Evap DTCs (P442, 4

Calendar Year and Model Year: State A 

Calendar 

Year 

Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2004 

Leak DTCs 980 2,502 5,285 2,256 5,940 1,430 911 944 425 8 . . . 

All Evap DTCs 10,678 7,638 11,756 6,140 13,535 2,969 2,059 1,420 525 8 . . . % of all DTCs  that are leaks 9.2% 32.8% 45.0% 36.7% 43.9% 48.2% 44.2% 66.5% 81.0% 100.0% . . . 

2005 

Leak DTCs 597 3,906 3,724 4,398 1,706 1,472 551 382 286 83 1 . . 

All Evap DTCs 7,171 12,636 8,092 12,960 3,330 2,740 1,210 684 414 111 1 . . % of all DTCs that are leaks 8.3% 30.9% 46.0% 33.9% 51.2% 53.7% 45.5% 55.8% 69.1% 74.8% 100.0% . . 

2006 

Leak DTCs 917 2,835 5,508 2,887 9,216 1,692 1,207 516 307 193 34 5 . 

All Evap DTCs 9,495 9,452 12,756 7,921 19,312 3,361 2,591 907 490 306 45 5 . % of all DTCs that are leaks 9.7% 30.0% 43.2% 36.4% 47.7% 50.3% 46.6% 56.9% 62.7% 63.1% 75.6% 100.0% . 

2007 

Leak DTCs 632 3,487 4,033 4,211 4,127 12,003 1,458 1,163 436 212 65 26 . 

All Evap DTCs 6,646 12,175 9,418 12,776 7,979 23,780 3,032 1,985 674 315 91 32 . % of all DTCs that are leaks 9.5% 28.6% 42.8% 33.0% 51.7% 50.5% 48.1% 58.6% 64.7% 67.3% 71.4% 81.3% . 

2008 

Leak DTCs 758 2,699 5,169 3,043 9,312 5,082 11,520 1,449 952 296 103 57 

All Evap DTCs 8,044 9,283 12,580 8,688 19,051 9,362 24,685 2,541 1,593 409 138 65 % of all DTCs that are leaks 9.4% 29.1% 41.1% 35.0% 48.9% 54.3% 46.7% 57.0% 59.8% 72.4% 74.6% 87.7% 6

2009 

Leak DTCs 625 3,173 4,066 4,265 4,754 11,357 4,840 14,038 1,215 650 159 69 

All Evap DTCs 6,176 11,455 10,028 13,022 9,712 23,820 9,137 24,073 2,001 926 205 86 % of all DTCs that are leaks 10.1% 27.7% 40.5% 32.8% 48.9% 47.7% 53.0% 58.3% 60.7% 70.2% 77.6% 80.2% 9

2010 

Leak DTCs 775 2,591 4,963 3,272 8,720 5,653 11,644 4,730 11,927 920 375 113 

All Evap DTCs 6,947 8,724 12,680 9,490 18,935 11,436 26,169 8,076 20,839 1,376 498 140 % of all DTCs that are leaks 11.2% 29.7% 39.1% 34.5% 46.1% 49.4% 44.5% 58.6% 57.2% 66.9% 75.3% 80.7% 8
E-6 

Table E-6. For All Test Cycles with Evap Monitor Ready: Percent of all Leak-Related Evap DTCs (P442, 4

Calendar Year and Model Year: State B 

Calendar 

Year 

Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 

2007 

Leak DTCs 72 276 337 199 376 589 598 525 261 . . . 

All Evap DTCs 825 993 908 716 809 943 946 730 365 . . . % of all DTCs that are leaks 8.7% 27.8% 37.1% 27.8% 46.5% 62.5% 63.2% 71.9% 71.5% . . . 

2008 

Leak DTCs 70 262 363 261 460 781 804 685 366 230 . . 

All Evap DTCs 749 992 981 875 990 1,201 1,266 963 502 265 . . % of all DTCs that are leaks 9.3% 26.4% 37.0% 29.8% 46.5% 65.0% 63.5% 71.1% 72.9% 86.8% . . 

2009 

Leak DTCs 65 274 341 263 447 858 1,002 901 585 341 229 . 

All Evap DTCs 699 982 965 912 1,022 1,382 1,530 1,264 759 395 286 . % of all DTCs that are leaks 9.3% 27.9% 35.3% 28.8% 43.7% 62.1% 65.5% 71.3% 77.1% 86.3% 80.1% . 

2010 

Leak DTCs 73 243 324 275 476 857 917 938 666 462 372 213 

All Evap DTCs 707 1,021 1,018 929 1,036 1,438 1,485 1,353 899 539 455 295 % of all DTCs that are leaks 10.3% 23.8% 31.8% 29.6% 45.9% 59.6% 61.8% 69.3% 74.1% 85.7% 81.8% 72.2% 

2011 

Leak DTCs 38 221 306 278 404 753 870 920 682 542 459 307 

All Evap DTCs 647 963 974 942 983 1,353 1,499 1,301 892 631 542 414 % of all DTCs that are leaks 5.9% 22.9% 31.4% 29.5% 41.1% 55.7% 58.0% 70.7% 76.5% 85.9% 84.7% 74.2% 

2012 

Leak DTCs 56 204 284 240 446 720 832 941 730 593 522 366 

All Evap DTCs 583 876 954 910 1,072 1,357 1,487 1,388 953 707 652 492 % of all DTCs that are leaks 9.6% 23.3% 29.8% 26.4% 41.6% 53.1% 56.0% 67.8% 76.6% 83.9% 80.1% 74.4% 
E-7 

Table E-7. For All Test Cycles with Evap Monitor Ready: Percent of all Leak-Related Evap DTCs (P442, 4

Calendar Year and Model Year: State C 

Calendar 

Year 

Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 20

2005 

Leak DTCs 93 574 428 482 440 1,385 394 121 24 12 . . . 

All Evap DTCs 1,252 2,554 1,555 1,446 837 1,962 614 162 34 14 . . . % of all DTCs that are leaks 7.4% 22.5% 27.5% 33.3% 52.6% 70.6% 64.2% 74.7% 70.6% 85.7% . . . 

2006 

Leak DTCs 108 390 689 354 850 907 1,563 386 65 18 15 1 . 

All Evap DTCs 1,538 1,688 2,197 1,126 1,677 1,321 2,287 566 108 23 16 2 . % of all DTCs that are leaks 7.0% 23.1% 31.4% 31.4% 50.7% 68.7% 68.3% 68.2% 60.2% 78.3% 93.8% 50.0% . 

2007 

Leak DTCs 83 594 590 635 745 1,839 1,069 1,548 302 68 21 12 . 

All Evap DTCs 1,073 2,260 1,858 1,943 1,431 2,729 1,580 2,044 407 75 27 14 . % of all DTCs that are leaks 7.7% 26.3% 31.8% 32.7% 52.1% 67.4% 67.7% 75.7% 74.2% 90.7% 77.8% 85.7% . 

2008 

Leak DTCs 96 337 672 428 1,129 1,174 2,154 973 797 189 40 14 

All Evap DTCs 1,224 1,403 2,035 1,415 2,072 1,735 3,203 1,348 1,120 211 53 19 % of all DTCs that are leaks 7.8% 24.0% 33.0% 30.2% 54.5% 67.7% 67.2% 72.2% 71.2% 89.6% 75.5% 73.7% 100

2009 

Leak DTCs 57 384 482 549 670 1,555 1,145 1,931 542 503 151 36 

All Evap DTCs 688 1,587 1,424 1,749 1,331 2,445 1,754 2,597 737 615 182 43 % of all DTCs that are leaks 8.3% 24.2% 33.8% 31.4% 50.3% 63.6% 65.3% 74.4% 73.5% 81.8% 83.0% 83.7% 7

2010 

Leak DTCs 10 43 50 67 115 159 233 147 125 43 51 7 

All Evap DTCs 82 147 168 180 238 257 360 214 180 53 65 8 % of all DTCs that are leaks 12.2% 29.3% 29.8% 37.2% 48.3% 61.9% 64.7% 68.7% 69.4% 81.1% 78.5% 87.5% 100
E-8 

Table E-8. For All Test Cycles with Evap Monitor Ready: Percent of all Leak-Related Evap DTCs (P442, 4

Calendar Year and Model Year: State D 

Calendar 

Year 

Model Year 

 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 20

2004 

Leak DTCs 58 147 143 106 244 191 91 34 23 . . . . 

All Evap DTCs 744 767 584 403 625 349 198 57 25 . . . . % of all DTCs that are leaks 7.8% 19.2% 24.5% 26.3% 39.0% 54.7% 46.0% 59.6% 92.0% . . . . 

2005 

Leak DTCs 41 177 119 135 206 313 131 56 30 12 . . . 

All Evap DTCs 601 827 520 517 436 654 292 108 46 13 . . . % of all DTCs that are leaks 6.8% 21.4% 22.9% 26.1% 47.2% 47.9% 44.9% 51.9% 65.2% 92.3% . . . 

2006 

Leak DTCs 53 208 179 137 350 422 508 136 71 34 8 2 . 

All Evap DTCs 736 986 807 580 825 708 1,102 233 111 46 8 2 . % of all DTCs that are leaks 7.2% 21.1% 22.2% 23.6% 42.4% 59.6% 46.1% 58.4% 64.0% 73.9% 100.0% 100.0% . 

2007 

Leak DTCs 48 187 180 148 402 574 505 479 131 44 21 7 . 

All Evap DTCs 729 1,020 752 693 764 999 828 822 229 61 29 9 . % of all DTCs that are leaks 6.6% 18.3% 23.9% 21.4% 52.6% 57.5% 61.0% 58.3% 57.2% 72.1% 72.4% 77.8% . 

2008 

Leak DTCs 57 206 197 157 399 495 580 290 416 92 38 29 

All Evap DTCs 739 1,008 834 621 860 848 1,085 487 762 129 44 33 % of all DTCs that are leaks 7.7% 20.4% 23.6% 25.3% 46.4% 58.4% 53.5% 59.5% 54.6% 71.3% 86.4% 87.9% 75

2009 

Leak DTCs 67 265 265 248 464 672 712 605 330 426 87 35 

All Evap DTCs 796 1,254 985 943 962 1,222 1,192 998 498 591 100 43 % of all DTCs that are leaks 8.4% 21.1% 26.9% 26.3% 48.2% 55.0% 59.7% 60.6% 66.3% 72.1% 87.0% 81.4% 66

2010 

Leak DTCs 70 286 319 253 594 784 998 584 640 309 390 71 

All Evap DTCs 1,004 1,474 1,282 1,030 1,280 1,376 1,777 907 1,090 423 475 95 % of all DTCs that are leaks 7.0% 19.4% 24.9% 24.6% 46.4% 57.0% 56.2% 64.4% 58.7% 73.0% 82.1% 74.7% 83

2011 

Leak DTCs 79 419 337 381 614 1,244 1,220 1,144 608 655 329 350 

All Evap DTCs 1,066 2,094 1,420 1,499 1,342 2,183 1,975 1,825 946 916 450 440 % of all DTCs that are leaks 7.4% 20.0% 23.7% 25.4% 45.8% 57.0% 61.8% 62.7% 64.3% 71.5% 73.1% 79.5% 78