Detroit DD15 GHG14 (2014-16) Fault Code: SPN 625 FMI 13 (MCM) Diagnostic Message Not Received this Ignition Cycle
NOTE: Please see the step by step troubleshooting procedures for this specific code.
NOTE: If there are any battery related faults, repair those first.
PROBABLE CAUSES:
1. Wiring between the MCM 21-pin connector at pins 7, 11, 12, 14, or 15 and ground.
2. Wiring between the MCM 21-pin connector at pins 5, 6, 8, or 9 and the battery.
3. Corrosion/debris at the MEM 120-pin connector.
4. Failed MCM.
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