Detroit DD16 EPA07 (2007-09) Fault Code: SPN 904 FMI 19 (CPC) Front Axle Speed Signal is Erratic

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

NOTE: If codes 168-0, 168-14, or 168-18 active fix those first.

PROBABLE CAUSE:
1. CPC has improper programming.
2. There is another computer on the vehicle (ABS, Transmission, Cab, etc…) that is causing the problems.