P401 is set when ECM detects that duty amount of EEGR actuator contol valve, ENG speed or amount of EGR is exceeded to minimum set point last to more than 15sec. In this case, check that stuck of EEGR actuator, air leakage of intake line.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy |
•
Signal monitoring |
•
EGR actuator stuck
•
EGR actuator component
•
Air leakage of intake line | ||
Enable Conditions |
•
Engine running | |||
Threshold Value |
•
Real value - Target value > upper specified air amout value | |||
Diagnostic Time |
•
15 sec. | |||
Fail Safe | Fuel cut | NO | ||
EGR Off | YES | |||
Fuel Limit | NO | |||
MIL | YES | |||
