P0639 OBD-II: Throttle Actuator Control Range/Performance

P0639 Severity

Urgent

Should you fix P0639 yourself?

Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.

Proper diagnosis will save you time and money on unnecessary repairs.

Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.

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P0639 Summary Find a Repair Shop P0639 Details Ask RepairPal CarGenius Other OBD-II Codes

What causes OBD-II fault code P0639?

The engine computer (PCM) monitor the movement of the throttle body to verify that it matches its commanded position. If the throttle body fails to move as requested, code P0639 will be set.

OBD II Fault Code

OBD II P0639

OBD-II Code Decreased engine performance is defined as a Throttle Actuator Control Range/Performance

The engine computer (PCM) monitor the movement of the throttle body to verify that it matches its commanded position. If the throttle body fails to move as requested, code P0639 will be set.

Decreased engine performance Symptoms

Decreased engine performance

Common Problems That Trigger the P0639 Code

Powertrain Control Module (PCM) failure
Throttle body assembly failure
Wiring issue

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Other OBD-II Codes

P0638: Throttle Actuator Control Range/Performance P0637: Power Steering Control Circuit High P0636: Power Steering Control Circuit Low P0635: Power Steering Control Circuit P0634: PCM/ECM/TCM Internal Temperature "A" Too High P0633: Immobilizer Key not Programmed - ECM/PCM P0632: Odometer not Programmed - ECM/PCM P0631: VIN not Programmed or Incompatible - TCM P0630: VIN not Programmed or Incompatible - ECM/PCM P062F: Internal Control Module EEPROM Error P062E: Fuel Injector Driver Circuit Performance P062D: Fuel Injector Driver Circuit Performance P063A: Generator Voltage Sense Circuit P063B: Generator Voltage Sense Circuit Range/Performance P063C: Generator Voltage Sense Circuit Low P063D: Generator Voltage Sense Circuit High P063E: Auto Configuration Throttle Input not Present P063F: Auto Configuration Engine Coolant Temperature Input not Present P0640: Intake Air Heater Control Circuit P0641: Sensor Reference Voltage "A" Circuit/Open P0642: Sensor Reference Voltage "A" Circuit Low P0643: Sensor Reference Voltage "A" Circuit High P0644: Driver Display Serial Communication Circuit P0645: A/C Clutch Relay Control Circuit

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