Possible Failure Causes
- Loose fuel tank filler cap.
- Fuel vent valve failed.
- Purge line or vapor line clogged.
- EVAP purge solenoid failed.
- EVAP ventilation solenoid failed.
- Engine Coolant Temperature (ECT) sensor failed.
- Fuel tank pressure sensor failed.
- Intake air temperature sensor failed.
- Power steering pressure switch failed.
- Incorrect or contaminated fuel used.