Possible Causes
WARNING: This page is about a different car, the 2003 Toyota MR2. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set if a leak is detected in EVAP system or vapor pressure sensor malfunctions. Possible causes are:
- Damaged, disconnected or restricted vacuum hose(s) or tubes.
- Fuel tank cap is loose or improperly installed.
- Defective fuel tank cap.
- Damaged fuel tank.
- Defective charcoal canister.
- Vapor pressure sensor circuit is open or shorted.
- Defective vapor pressure sensor.
- Defective overfill check valve.
- Defective ECM.