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Detroit DD16 GHG14 (2014-16) Fault Code: SPN 164 FMI 21 (MCM) Fuel Rail Pressure Sensor Drift Low

DESCRIPTION:
Fuel rail pressure sensor – drift low.

MONITORED PARAMETER:
Fuel rail pressure sensor.

TYPICAL ENABLING CONDITIONS:
1. Key on
2. Engine off

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Once when enabling conditions met.

TYPICAL DURATION:
10 seconds

DASH LAMPS:
1. MIL
2. CEL

ENGINE REACTION:
Derate 25%

VERIFICATION:
1. Key on
2. Engine off

PROBABLE CAUSES:
1. Fuel rail pressure sensor.
2. Fuel rail pressure sensor harness/connector.

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