Possible Causes
WARNING: This page is about a different car, the 2003 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
ECM illuminates MIL and sets DTC P0605, when:
- Malfunction A - ECM calculation function is malfunctioning,
- Malfunction B - ECM EEP-ROM system is malfunctioning
- Malfunction C - ECM self shut-off function is malfunctioning.
Only possible cause is a faulty ECM.