Detroit DD15 EPA10 (2010-13) Fault Code: SPN 520250 FMI 4 (MCM) Quantity Control Valve Low Side Driver Error
POSSIBLE CAUSES:
1. MCM Pin 2 circuit is shorted to power
2. Internal short of the quantity control valve
NOTE: Please see the step by step troubleshooting procedures for this specific code.
PROBABLE CAUSES:
1. Failed quantity control valve.
2. Wiring between the quantity control valve and the 120-pin ECM connection.
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