Throttle Actuator B Control Motor Circuit Range/Performance
Throttle actuator B motor responds electrically but does not move the throttle plate as commanded — typically high-resistance brushes, partial winding fault, or a sticky throttle bore.
Affected components
- Throttle actuator b
- Throttle motor b
Common causes
- High likelihood: Motor brushes worn
- Medium likelihood: Carbon buildup at throttle plate
- Low likelihood: Sensor element aged beyond calibration window
Possible symptoms
- Check engine light on
- Reduced throttle response, possible limp mode
- Hesitation or surging
- Idle too high or too low
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.