If CCV is stuck closed and FTP is less than -2500Pa, the PCM sets DTC P0449.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
CCV(Canister Closed Valve) Stuck Closed | 1. Poor connection 2. Damaged Wiring 3. CCV |
Enable Conditions |
•
CCV Open
•
PCSV(Purge Control Solenoid Valve) Close
•
Common conditions for evap.system monitoring | |
Threshold Value |
•
FTP(Fuel Tank Pressure) less than -2200Pa(-0.31psi/-0.022bar) | |
Diagnostic Time |
•
15 sec. | |
Mil On Condition |
•
2 Drive Cycles |