DTC Hyundai B1642 Short Explanation
Channel: Maxidot Hyundai
Date: 2020-06-20

The video focuses on the basic Hyundai specific 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:
Hyundai
Code:
B1642
Definition:
EVAP Control System Small Leak Detected
Description:
Engine started,battery voltage must be at least 11.5v,all electrical components must be off.The DME detected a leak in the EVAP system as small as 0.040 inches during the EVAP Monitor Test.The coolant temperature is less than 60 degrees Celsius,and the ambient pressure is greater than 76.2994kPa.The air intake temperature at start is between 9.04 and 16.04 degrees Celsius.The change in barometric pressure since engine start is less than 0.9998kPa.The vehicle speed is less than 74.56mph,and the purge valve has opened enough on previous driving cycle.
Cause:
 Aftermarket EVAP parts that do not conform to specifications CV solenoid remains partially open when commanded to close EVAP component seals leaking (i. e. ,leaks in the Purge valve,fuel tank pressure sensor,canister vent solenoid,fuel vapor control valve tube assembly or fuel vapor vent valve). Fuel filler cap damaged,cross-threaded or loosely installed Loose fuel vapor hose or tube connections to EVAP components Small holes or cuts in fuel vapor hoses or EVAP canister tubes