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 the minimum voltage from the sensor is not low enough. Possible causes are:
- HO2S2 circuit open or shorted.
- Defective HO2S2.
- Fuel pressure incorrect.
- Defective injectors.
- Intake air leaks.