DTC Troubleshooting: U0302(A/T System): Notes

DTC U0302 : Software Incompatibility With Transmission Control Module

NOTICE:

Before you troubleshoot, review the How to Troubleshoot .
Do not turn the vehicle to the OFF (LOCK) mode while updating the TCM. If you do, the TCM can be damaged.

NOTE: This DTC is indicated when the TCM update procedure is not completed.