Possible Causes
WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
Possible causes are:
- Catch tank malfunction
- Charcoal canister malfunction
- EVAP hose damaged or loose
- EVAP system leak detection pump malfunction
- Fuel tank malfunction
- Loose, missing or defective fuel filler cap
- PCM malfunction
- Poor connection or damaged vacuum hose
- Purge solenoid valve malfunction