Possible Causes
WARNING: This page is about a different car, the 2003 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
- Vacuum hose has cracks, holes or is blocked, damaged or disconnected.
- Fuel tank cap incorrectly installed.
- Fuel tank cap has cracks or is damaged.
- Open or short in vapor pressure sensor circuit.
- Defective vapor pressure sensor.
- Open or short in VSV circuit for EVAP.
- Defective VSV for EVAP.
- Open or short in VSV circuit for CCV.
- Defective VSV for CCV.
- Defective trap canister assembly.
- Fuel tank has cracks, holes or is damaged.
- Charcoal canister has cracks, holes or is damaged.
- Fuel tank over fill check valve cracks or is damaged.
- Defective ECM.