Detroit DD15 GHG14 (2014-16) Fault Code: SPN 3859 FMI 4 (CPC) Digital Input 4 16 – Short to Ground on Pin 16 Circuit of the Common Powertrain Controller #4 Connector

NOTE: The common powertrain controller (CPC) digital outputs have the same SPN as some motor control module (MCM) faults.

NOTE: If ECM has been programmed recentely, check programming to ensure it is correct.

NOTE: Otherwise, fix the open circuit on pin 16 of the CPC4 #4 connector