If EVAP system detects a very small leak, the PCM sets P0456.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Check Fuel Tank Pressure(FTP) with CCV(Canister Control Valve) and PCSV(Purge Control Solenoid Valve) closed after the P0455 monitor | 1. Fuel Filler Cap missing 2. Leakage in each hose/fuel filler pipe 3. Leakage in CCV / Canister / Fuel tank |
Enable Conditions |
•
CCV Close
•
PCSV Close | |
Threshold value |
•
Tank pressure gradient greater than 27.5 ~ 34Pa/sec | |
Diagnosis Time |
•
15 sec | |
MIL On Condition |
•
2 driving cycles |
