DTC P1431 Cadillac
PGM-FI System and A T System Program Version Mismatch
PGM-FI System and A T System Program Version Mismatch
Description
The rewriting of the FI CPU or the A T CPU is done at the PCM, and different data of the serial communication data version is rewritten. The execution time is continuous and the duration time is 500 milliseconds or more. WARNING: Do not turn the ignition switch to LOCK (0) or ACC (I) while updating the PCM. If you turn the ignition switch to LOCK (0) before completion, the PCM will be damaged.
Video Guide
Diagnostic Info
- DTC Code: P1431
- Brand: Cadillac