Detroit DD15 GHG14 (2014-16) Fault Code: SPN 3361 FMI 31 (ACM) Diesel Exhaust Fluid Dosing Unit Error
DESCRIPTION:
The fault indicates that the diesel exhaust fluid (DEF) dosing unit was switch off before completing a cycle.
MONITORED PARAMETER:
DEF pressure
TYPICAL ENABLING CONDITIONS:
When service routine is enabled and during infrequent in-use check under non DEF dosing conditions.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Service tool and infrequent in-use checks during DEF dosing conditions.
TYPICAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERIFICATION:
Selective catalyst reduction (SCR) airless dosing system (ADS) self-check routine.
NOTE: If any other codes present, repair those first.
PROBABLE CAUSES:
1. DEF dosing unit harness connector/wiring.
2. Dosing unit failure.
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SERVICE MANUAL 3000 AND 4000 SERIES GEN 4 GENERATION – ALLISON
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