Detroit DD13 GHG14 (2014-16) Fault Code: SPN 3512 FMI 3 (MCM) 3V Sensor Supply Bank 1 Circuit Failed High
NOTE: This fault indicates that the motor control module (MCM) detects a short to power (voltage greater than 3.2. on any of the MCM pins).
PROBABLE CAUSES:
Short to power on one of the following from the main 120-pin ECM connector:
1. Pin 55 – Fuel temp sensor, engine coolant temp sensor.
2. Pin 77 – Fuel temp sensor.
3. Pin 102 – Charge air cooler outlet pressure sensor.
4. Pin 108 – Engine oil temperature/pressure sensor.
5. Pin 110 – Engine coolant temperature sensor.
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