P0639

2017-10-10

Description:

  • The fault code P0639 indicates that the control range or performance of the throttle actuator in bank 2 is not within the expected parameters. This can result in poor engine performance or even engine stalling.

Possible Symptoms:

  • Reduced engine power or acceleration

  • Rough idle or engine stalling

  • Illuminated check engine light

  • Reduced fuel efficiency

Possible Causes:

  • Failed throttle actuator in bank 2

  • Faulty wiring or connections in the throttle actuator circuit

  • Poor electrical ground connections

  • Failed engine control module (ECM)

Related Parts:

  • Throttle Position Sensor: Throttle position sensor generally denotes the position of the accelerator pedal. Problems lead to poor acceleration

Possible Solutions:

  • Replace the failed throttle actuator in bank 2

  • Check and repair any damaged wiring or connections in the throttle actuator circuit

  • Ensure that electrical ground connections are clean and secure

  • Replace the engine control module (ECM) if necessary

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