Advanced Diagnostics

Advanced Diagnostics - DTC U0300: PGM-FI System And A/T System Program Version Mismatch






General Description
A check of the communication data is done during communication between the FI CPU and the A/T CPU. When the FI CPU or the A/T CPU is rewritten in the powertrain control module (PCM), and the internal communication version that is rewritten does not match, the PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status






Enable Conditions






Malfunction Threshold
The FI CPU or the A/T CPU is rewritten in the PCM, but the internal communication version that is rewritten does not match.

Diagnosis Details

Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and the Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory.

Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.