Detroit DD16 GHG14 (2014-16) Fault Code: SPN 168 FMI 7 (CPC) Opt Idle Detected Charging System or Battery Failure

NOTE: Please see the step by step troubleshooting procedures for this specific code.

PROBABLE CAUSES:
1. Alternator belt failure.
2. Alternator mounting failure or out of alignment.
3. Alternator failure.
4. Battery or battery cable failure.
5. Wiring from battery to engine ECM.