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Detroit DD13 EPA07 (2007-09) Fault Code: SPN 4077 FMI 3 (MCM) Doser Fuel Line Pressure Sensor Circuit Failed High
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 high.
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. MIL2. 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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