PCM Reset Procedure
WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.
After a PCM reset procedure has been performed, the following conditions will be met:
- All DTCs will be cleared from PCM memory.
- All freeze frame data will be cleared from PCM memory.
- Diagnostic monitoring results will be cleared from PCM memory.
- OBD-II system monitor status will reset.
- DTC P1000 will be set in PCM memory until all OBD-II system monitors or components have been tested to satisfy OBD-II drive cycle without any faults occurring. To clear DTC P1000, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. Ensure OBD-II DRIVE CYCLE PROCEDURE is performed to verify repair.
To perform PCM reset using scan tool, follow scan tool manufacturer's operating instructions. If after clearing DTCs a concern has not been corrected, or a fault is still present, a hard code will immediately be reset in PCM memory.