DTC Troubleshooting: U0300 (131)

DTC U0300:

PGM-FI System and A/T System Program Version Mismatch

• Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
• Do not turn the ignition switch OFF while updating the PCM. If you turn the ignition switch OFF before completion, the PCM will be damaged.

1.	Do the PCM update procedure (PGM-FI system).

2.	Do the PCM update procedure (A/T system).

3.	Check for Temporary DTCs or DTCs with the HDS. Is DTC U0300 indicated? YES - Replace the original PCM.n NO - The update is complete.n