Detroit DD15 GHG14 (2014-16) Fault Code: SPN 51 FMI 18 (MCM) Intake Throttle Position Rationality Error

DESCRIPTION:
This fault sets when intake throttle position does not match requested range.

MONITORED PARAMETER:
Intake throttle valve (ITV).

TYPICAL ENABLING CONDITIONS:
Engine rpm = idle or higher.

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Continuous when enabling conditions met.

TYPICAL DURATION:
Five seconds

DASH LAMPS:
MIL

ENGINE REACTION:
No derate

VERIFICATION:
Engine rpm = idle or higher.

POSSIBLE CAUSES:
1. Damaged ITV butterfly flap.
2. Faulty ITV motor.
3. Faulty ITV sensor.

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

Related

Categories DD15 GHG14 (2014-16), Detroit, DTC TRUCKS Tags 16, 18, 2014, 51, Code, DD15, Detroit, Error, Fault, FMI, GHG14, Intake, MCM, Position, Rationality, SPN, Throttle

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