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 P0447, when an improper voltage is sent to ECM through EVAP-CVCV. Possible causes are:
- EVAP-CVCV circuit open or shorted.
- Poor, loose, corroded or damaged terminal connections.
- Defective EVAP-CVCV.