The ECM/PCM sets DTC P0441 if the pressure signal decrease occurs and the difference is below the predetermined threshold. If same error code is set in the next driving cycle, the ECM/PCM illuminates the MIL.
Item | Detecting Condition & Fail Safe | Possible Cause | |
DTC Strategy | Case1 |
•
Open stuck diagnosis during CCV closed and CPSV closed | 1. Leakage on hose to PCSV 2. Faulty PCSV |
Case2 |
•
Close stuck diagnosis during CCV closed and CPSV open | ||
Enable Conditions | Case1 |
•
CCV Close
•
CPSV Close
•
Common Conditions for Evap.System Monitoring | |
Case2 |
•
CCV Close
•
CPSV Open
•
Common Conditions for Evap.System Monitoring | ||
Threshold Value | Case1 |
•
Differential fuel tank Pressure > -200 pa | |
Case |
•
Differential fuel tank Pressure > -30 pa | ||
Diagnostic Time |
•
15 sec. | ||
Mil On Condition |
•
2 Driving Cycles | ||
