NOTE: Please see the step by step troubleshooting procedures for this specific code.
NOTE: If ECM has been programmed recentely, check programming to ensure it is correct.
NOTE: Otherwise, fix the open circuit on pin 15 of the CPC4 #4 connector.
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 3840 FMI 5 (CPC) Frequency Output 4 15 – Indicated By an Open Circuit on Pin 15 Circuit of the Common Powertrain Controller #4 Connector
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