Detroit DD15 GHG14 (2014-16) Fault Code: SPN 511403 FMI 11 (CPC) Generator (Charging System) D+ Terminal Failure
NOTE: Please see the step by step troubleshooting procedures for this specific code.
PROBABLE CAUSES:
1. If any battery voltage codes present, fix those first.
2. If any 625-xx codes, fix those first.
3. If the CPC4 has been recently programmed, ensure the parameters are correct.
4. Turn key off for 5 minutes, then turn back on.
5. Check alternator drive belt condition.
6. Check installation of mounting of alternator.
7. Failed alternator.
8. Failed truck batteries.
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