DTC Troubleshooting

DTC Troubleshooting: U0300

DTC U0300: PGM-FI System and A/T System Program Version Mismatch

NOTE:

- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information. Reading and Clearing Diagnostic Trouble Codes

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

1. Do the PCM update procedure (PGM-FI system and A/T system). ECM/PCM Update

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

Is DTC U0300 indicated?
YES - Replace the original PCM. Service and Repair

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