Possible Causes
WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
Malfunction is detected when HO2S2 response time is too long. Possible causes are:
- HO2S2 circuit open or shorted.
- Defective HO2S2.
- Fuel pressure.
- Injectors.
- Intake air leaks.