DTC Troubleshooting

DTC Troubleshooting: P0602

DTC P0602: ECM/PCM Programming Error

NOTE:

- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information. Initial Inspection and Diagnostic Overview

- This DTC is indicated when an ECM/PCM update is not completed.

- Do not turn the ignition switch to ACC (I) or to LOCK (0) while updating the ECM/PCM. If you do, the ECM/PCM can be damaged.

1. Do the ECM/PCM update procedure. ECM/PCM Update (A/T)

2. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0602 indicated?
YES - Replace the original ECM/PCM. Service and Repair

NO - The update is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.