Detroit DD15 GHG14 (2014-16) Fault Code: SPN 3873 FMI 4 (CPC) Analog Output 02 – Failed Low, Indicated by a Short to Ground on Pin 6 of the Common Powertrain Controller #3 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 6 of the CPC4 #3 connector.