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Detroit DD13 EPA10 (2010-13) Fault Code: SPN 4336 FMI 4 (ACM) Diesel Exhaust Fluid Pressure Limiting Unit Circuit Failed Low

DESCRIPTION:
Diesel exhaust fluid (DEF) pressure limiting unit circuit failed low.

MONITORED PARAMETER:
Diesel exhaust fluid (DEF) pressure limiting unit.

TYPICAL ENABLING CONDITIONS:
Diesel exhaust fluid (DEF) pressure limiting unit on.

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:
Output component test.

NOTE: If code is inactive, disregard.

NOTE: Otherwise, check the DEF pressure limiting unit harness connector and wiring. If no problems found, replace the pressure limiting unit.

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