Possible Causes
WARNING: This page is about a different car, the 2002 Nissan Pathfinder and 2002 Infiniti QX4. However, it is still accessible from the selected car via links, so may be relevant.
ECM illuminates MIL and sets DTC P1706 when PNP switch signal does not change between starting and driving. Possible causes are:
- PNP switch circuit open or shorted.
- Defective PNP switch.