DESCRIPTION:
This fault code sets when the motor control module (MCM) detects that the hydrocarbon (HC) doser fuel line pressure (FLP) sensor circuit is failed low.
MONITORED PARAMETER:
Hydrocarbon (HC) doser fuel line pressure sensor.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Always enabled
TYPICAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
Engine Idle: One minute.
PROBABLE CAUSES:
1. If 4077-3 and 94-3 are present, repair the open between pin 104 of the ECM 120-pin connector and pin 4 (or pin 2 on DD15 engines) of the hydrocarbon doser fuel lines pressure sensors.
2. Failed fuel line pressure (FLP) sensor.
3. Wiring between the FLP sensor & the ECM.
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