Detroit DD16 EPA10 (2010-13) Fault Code: SPN 520249 FMI 4 (ACM) Selective Catalytic Reduction Inlet Temperature High

NOTE: This condition can occur when:
1. MCM pin 2 circuit is shorted to ground.
2. Quantity Control Valve (QCV) internal short to ground.

DESCRIPTION:
Quantity Control Valve (Low Side) Error

MONITORED PARAMETER:
Quantity control valve

TYPICAL ENABLING CONDITIONS:
Always enabled

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Continuous when enabling conditions met

TYPICAL DURATION:
Two seconds

DASH LAMPS:
1. MIL
2. CEL

ENGINE REACTION:
Derate 25%

VERIFICATION:
Engine Idle: One minute.

NOTE: If code 3246-15 present, fix that first.

PROBABLE CAUSES:
1. SCR inlet temperature sensor.
2. SCR inlet temperature sensor connector/harness.

Categories DD16 EPA10 (2010-13), Detroit, DTC TRUCKS Tags 13, 2010, 4, 520249, ACM, Catalytic, Code, DD16, Detroit, EPA10, Fault, FMI, High, Inlet, Reduction, Selective, SPN, Temperature

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