Detroit DD15 EPA10 (2010-13) Fault Code: SPN 2791 FMI 3 (MCM) Circuit Failed High
NOTE: Please see the step by step troubleshooting procedures for this specific code.
PROBABLE CAUSES:
1. Wiring between pin 1 of the EGR valve connector and pin 61 of the 120-pin MCM connector.
2. EGR valve failure.
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