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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 5927 FMI 7 (MCM) Cooling System Performance Defect

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

PROBABLE CAUSES:
1. Water pump failure.
2. Coolant temperature in too high.
3. Coolant temperature out too high.
4. Intake temperature high.
5. Engine protection mode active.
6. Water pump failure.
7. Water pump wiring to ECM.