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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 (see GENERAL TROUBLESHOOTING INFORMATION ).
  • 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) (see ECM/PCM UPDATE  ).
  2. Check for Pending or Confirmed DTCs with the HDS.

    Is DTC U0300 indicated? 

    YES  -Replace the original PCM (see ECM/PCM REPLACEMENT  ).

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

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