Detroit DD15 GHG14 (2014-16) Fault Code: SPN 157 FMI 17 (MCM) Minimum Rail Pressure Not Achieved While The Engine Is Cranking

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DESCRIPTION:
Minimum rail pressure for injection not achieved.

MONITORED PARAMETER:
Fuel rail pressure.

TYPICAL ENABLING CONDITIONS:
Always enabled

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
MIL

TYPICAL DURATION:
1. DD13: 90 seconds of cranking.
2. DD15: 60 seconds of cranking.
3. DD16: 60 seconds of cranking.

DASH LAMPS:
MIL

ENGINE REACTION:
None

VERIFICATION:
1. Turn the ignition on.
2. Clear codes using the diagnostic service tool.
3. Start engine.
4. Check for codes.

Check as follows:
The motor control module (MCM) monitors the fuel rail pressure and when fuel rail pressure does not reach a minimum 150 bar with three cranking cycles, the MCM sets the code. One cranking cycle for the DD13 is 30 seconds. One cranking cycle for the DD15 and DD16 is 20 seconds.

POSSIBLE CAUSES:
1. Fuel filter integrity (loose caps, plugged filters).
2. Fuel supply issues (fuel level, fuel aeration, leaking fuel lines, fuel restrictions).
3. High pressure pump internal failure.
4. Fuel contamination.
5. Rail pressure sensor.
6. Motor control module (MCM).

NOTE: The ECM monitors the rail pressure and when it changes more than 200 bar for 8 seconds the 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 issue (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 contaminated (oil, gas, etc…).
9. Rail pressure sensor or connector/harness.
10. Engine ECM failure.

Categories DD15 GHG14 (2014-16), Detroit, DTC TRUCKSTags 157, 16, 17, 2014, Achieved, Code, Cranking, DD15, Detroit, Engine, Fault, FMI, GHG14, is, MCM, minimum, Not, Pressure, Rail, SPN, the, While

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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 157 FMI 17 (MCM) Minimum Rail Pressure Not Achieved While The Engine Is Cranking - EcuForce Truck (2024)

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