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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 51 FMI 10 (MCM) Intake Throttle Position Abnormal Rate of Change

NOTE: This code sets when the intake throttle valve (ITV) position is not within 30% of the commanded position during freezing conditions.

DESCRIPTION:
Intake throttle position abnormal rate of change.

MONITORED PARAMETER:
Intake Throttle Valve.

TYPICAL ENABLING CONDITIONS:
Engine rpm = idle or higher.

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Continuous when enabling conditions met.

TYPICAL DURATION:
Five seconds

DASH LAMPS:
None

ENGINE REACTION:
No derate

VERIFICATION:
Engine rpm = idle or higher.

POSSIBLE CAUSES:
1. Faulty ITV motor.
2. Faulty ITV position.
3. Frozen (ice buildup) ITV butterfly.

PROBABLE CAUSES:
1. Air throttle valve harness.
2. ITV harness connector.
3. Intake throttle valve failure.
4. Cold temperatures may falsly cause this code to appear.
5. Intake throttle valve sensor.

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