Detroit DD15 GHG14 (2014-16) Fault Code: SPN 4374 FMI 19 (ACM) Diesel Exhaust Fluid System is Not Being Controller as Expected
DESCRIPTION:
DEF system is not being controlled as expected.
MONITORED PARAMETER:
1. DEF pump speed.
2. Pump duty cycle.
TYPICAL ENABLING CONDITIONS:
1. DEF pump operation is above.
2. Below defined thresholds.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Continuous when enabling conditions met.
TYPICAL DURATION:
2 minutes
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERIFICATION:
SCR ADS Self-Check.
NOTE: If any other codes active, fix those first.
PROBABLE CAUSES:
1. Inspect the DEF pump connector/harness.
2. DEF pump failure.
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