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.