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Detroit DD13 EPA07 (2007-09) Fault Code: SPN 4077 FMI 14 (MCM) Hydrocarbon Doser Fuel Line Pressure Failed Self – Test

DESCRIPTION:Hydrocarbon (HC) doser fuel line pressure failed self – test.

MONITORED PARAMETER:Hydrocarbon (HC) doser fuel line pressure.

TYPICAL ENABLING CONDITIONS:Dosing enabled

MONITOR SEQUENCE:None

EXECUTION FREQUENCY:Continuous when enabling conditions met.

TYPICAL DURATION:One minute

DASH LAMPS:1. MIL2. CEL

ENGINE REACTION:Derate 10%

VERIFICATION:Parked regeneration

NOTE: If any fuel system faults present, fix those first.

PROBABLE CAUSES:1. Inspect the hydrocarbon doser block assy and the fuel doser injector valve fuel lines for any leaks.2. Low fuel pressure.3. Failed hydrocarbon doser fuel injection valve.4. Perform parked regen.

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