Detroit DD13 EPA07 (2007-09) Fault Code: SPN 70 FMI 19 (CPC) Park Brake Switch Signal from Source #1, #2, or #3 is Erratic
NOTE: If codes for other modules are present, fix those first.
PROBABLE CAUSES:
1. Improper programming of the CPC (Common Powertrain Controller).
2. Other failed modules on the truck (Transmission, ABS, Cab controller, etc…).
3. Battery/battery cable issues, or electrical issue on truck.
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