Possible Causes
- Canister Drain Cut Valve (CDCV) malfunction.
- Catch tank malfunction.
- Charcoal canister malfunction.
- EVAP hoses damaged or loose.
- EVAP pipe damaged.
- Fuel filler cap malfunction.
- Fuel pump unit poor seal.
- Fuel tank malfunction.
- Purge solenoid valve malfunction.