Detroit DD16 GHG14 (2014-16) Fault Code: SPN 3842 FMI 4 (CPC) Analog Ground 3 02 Circuit Failed Low on Pin 2 Circuit of the Common Powertrain Controller #3 Connector

Posted by PerDiezel Solutions on April 23, 2026

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 2 of the CPC4 #3 connector.

WARNING!