Detroit DD16 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.