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.
- Defective HC adsorber three-way catalyst (inside exhaust front pipe).
- Gas leakage in exhaust system.
- Defective heated oxygen sensor No. 2 (bank No. 1 sensor No. 2).
- Defective heated oxygen sensor No. 3 (bank No. 1 sensor No. 3).