DTC Troubleshooting: P0602 (196)

DTC P0602:  ECM/PCM Programming Error

  • 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/PCM update is not completed.
  • Do not turn the ignition switch OFF while updating the ECM/PCM. If you turn the ignition switch OFF before completion, the ECM/PCM can be damaged.

1.Do the ECM/PCM update procedure.

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

Is DTC P0602 indicated?

YES - Replace the original ECM/PCM.n

NO - Update is complete.n