DESCRIPTION:
Diesel Exhaust Fluid (DEF) pump circuit failed open.
MONITORED PARAMETER:
DEF pump
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Always enabled
TYPICAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERIFICATION:
Engine Idle (1 minute).
PROBABLE CAUSES:
1. DEF pump harness connector/wiring.
2. DEF pump failure.
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