DTC cadillac P0442 Short Explanation
Channel: Maxidot Cadillac
Date: 2020-06-20

The video focuses on the basic Cadillac diagnostic error code.
Contents:
0:21 Basic DTC analysis according to OBD2 protocol standard.
1:48 Insight into programming
- an explanation of what a bit is and how a byte is formed
- decoding the Error Code to the base programming
2:58 A diagnostically understandable description of the Diagnostic Trouble Code
3:05 Basic error definition
- Possible causes or errors of the car and its parts describing the mentioned error

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Make: 
Cadillac 
Code: 
P0442 
Definition: 
Evaporative Emission (EVAP) System Small Leak Detected 
Description: 
DTCs P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0222, P0223, P0443, P0446, P0449, P0451, P0452, P0453, P0454, P0455, P0461, P0462, P0463, P0464, P0496, P0502, P0503, P0641, P0651, P1516, P2101, P2119, P2120, P2122, P2123, P2125, P2127, P2128, P2135, P2138 are not set. The ignition 1 voltage is between 10-16 volts. The barometric pressure (BARO) is greater than 74 kPa. No fuel filling during the EONV test period. The fuel level is between 15-85 percent. The start-up engine coolant temperature (ECT) and the start-up intake air temperature (IAT) are between 0-40°C (32-104°F). The barometric pressure (BARO) is greater than 74 kPa. The engine run time before engine shut-off was greater than 10 minutes. The drive distance before engine shut-off was greater than 5 kilometers (3.1 miles). The ignition is OFF. The ambient air temperature at the end of the drive cycle is between 0-32°C (32-93°F). DTC P0442 runs once per drive cycle during the hot soak period after the ignition is turned OFF and may require up to 45 minutes to complete. The controller will not make more than 2 test attempts per day. The time since the last completed EONV test must be at least 17 hours. 
Cause: 
The control module detects a leak in the EVAP system that is greater than a calibrated amount.
The control module must complete several EONV tests before the diagnostic can turn the MIL ON or OFF.