Possible Causes
Possible causes are:
- Missing, loose or malfunctioning fuel filler cap.
- Loose or plugged vacuum hose.
- Fuel tank related component part malfunction.
- EVAP canister plugged.
- EVAP Canister Purge Valve (EVAP-CPV) malfunction.
- EVAP Canister Air Valve (EVAP-CAV) malfunction.
- Fuel Tank Pressure (FTP) sensor malfunction.
- Fuel level gauge malfunction.
- ECM malfunction.