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.