Possible Causes
WARNING: This page is about a different car, the 2002 Nissan Xterra and 2002 Nissan Frontier. However, it is still accessible from the selected car via links, so may be relevant.
Malfunction is detected when an excessively low or high voltage from ECT sensor is sent to ECM. Possible causes are:
- ECT sensor circuit open or shorted.
- Defective ECT sensor.