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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 GENERAL TROUBLESHOOTING INFORMATION .
  • Do not turn the ignition switch to ACC (I) or to LOCK (0) while updating the PCM. If you do, the PCM will be damaged.
  1. Do the PCM update procedure for the PGM-FI and the A/T systems (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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