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 P0506 when idle is 100 RPM or more less than target speed. Possible causes are:
- Defective IACV-AAC valve.
- Poor, loose, corroded or damaged terminal connections.
- Intake air leak.
- Air control valve.