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Detroit DD16 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. MIL
2. 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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