Possible Causes
- Canister Drain Cut Valve (CDCV) malfunction.
- Catch tank malfunction.
- Charcoal canister malfunction.
- Check valve malfunction.
- Cracked fuel tank.
- EVAP hoses damaged or loose.
- Fuel Tank Pressure (FTP) sensor malfunction.
- Loose, missing or defective fuel filler cap.
- Poorly installed fuel tank components.
- Purge solenoid valve malfunction.
- Rollover valve malfunction.