DTC Troubleshooting

DTC P0602: ECM Programming Error

NOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
- This DTC is indicated when a ECM update is not completed.
- Do not turn the ignition switch OFF while updating the ECM. If you turn the ignition switch OFF before completion, the ECM can be damaged.

1. Do the ECM update procedure.
2. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0602 indicated?

YES - Replace the original ECM.

NO - Update is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting.