P0639
Throttle Actuator Control Range/Performance Bank 2
Generic code
Computer Output Circuit
High severity
Moderate repair
Free on OBD DashX
Want real-world data on P0639?
See which problems come with P0639, how often it shows up in other vehicles, and how to fix it — step by step.
- Real-world fix data
- How often it happens
- Step-by-step repairs
What P0639 means
- 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
Free on OBD DashX
P0639 on OBD DashX
Real-world causes, how often this code shows up, and the fix — step by step.
Open P0639 No sign-up needed · available in 10 languagesScan your own car
Read and clear fault codes, live data and service resets with the CaRPM app.