Detroit DD13 EPA07 (2007-09) Fault Code: SPN 2623 FMI 4 (CPC) PWM Accelerator Pedal J1939 GAS2 Signal is Missing

NOTE: Please see the step by step troubleshooting procedures for this specific code.

NOTE: If any battery voltage codes present, first those first. If code 625-9 active, fix that before proceeding as well.

PROBABLE CAUSES:
1. CPC recently programmed incorrectly.
2. Another computer on the truck is the cause of the problems (ABS, Transmission, etc…)