Detroit DD15 GHG14 (2014-16) Fault Code: SPN 5323 FMI 13 (MCM) Excessive Time to Enter Closed Loop Fuel Pressure Control

DESCRIPTION:
Intake manifold pressure low.

MONITORED PARAMETER:
Intake manifold pressure.

TYPICAL ENABLING CONDITIONS:
1. Intake psi
2. CAC psi
3. Engine speed

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Continuous when enabling conditions met.

TYPICAL DURATION:
Two seconds

DASH LAMPS:
1. MIL
2. CEL

ENGINE REACTION:
Derate 25%

NOTE: The MCM monitors the rail pressure and when rail pressure is less tha n200 bar, this code is set.

PROBABLE CAUSES:
1. External fuel leakage between the high pressure pump and fuel injectors.
2. Pressure limiting valve leakage (internal).
3. Fuel filter integrity (loose caps, plugged filters).
4. Fuel supply issues (fuel level, fuel aeration, leaking fuel lines, fuel restrictions).
5. Intermittent loss of engine speed signal.
6. High pressure pump internal failure.
7. Fuel injector leakage.
8. Fuel contamination.
9. Rail pressure sensor.
10. Motor Control Module (MCM).