Detroit DD15 GHG14 (2014-16) 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.

NOTE: Cause is either CPC has improper programming or there is another computer on the vehicle (ABS, Transmission, Cab, etc…) that is causing the problems.