SPN 629 is a diagnostic trouble code for Controller #1 Bad Intelligent. Usually a voltage anomaly.
FMI 12 – Device Or Component
FMI 8 – ECM error, engine off timer fault
Troubleshoot:
ECM calibration and connections, fuses
SPN 629 is a diagnostic trouble code for Controller #1 Bad Intelligent. Usually a voltage anomaly.
FMI 12 – Device Or Component
FMI 8 – ECM error, engine off timer fault
Troubleshoot:
ECM calibration and connections, fuses