DTC Troubleshooting

DTC Troubleshooting: P0602

DTC P0602: 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 a PCM update is not completed.

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

1. Do the PCM update procedure. PCM Update

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

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

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