DTC Troubleshooting

Control System DTCs

DTC Troubleshooting: P0602

DTC P0602 : ECM Programming Error

NOTE:
* Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information How To Troubleshoot The Fuel And Emissions Systems.
* This DTC is indicated when a ECM update is not completed.
* Do not turn the ignition switch to ACC (I) or LOCK (0) while updating the ECM. If you do, the ECM can be damaged.

1. Problem verification (update):

Problem verification (update)
-1. Do the ECM update procedure ECM/PCM Update.

-2. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P0602 indicated?
-YES- Replace the ECM Service and Repair.
-NO- Update is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.