Throttle Actuator B Control Throttle Body Range/Performance
The throttle B body itself does not respond as commanded — position feedback is plausible but does not track the setpoint within the calibrated time window.
Affected components
- Throttle actuator b
Common causes
- High likelihood: Throttle body aged or contaminated
- Low likelihood: Sensor element aged beyond calibration window
- Low likelihood: Sensor mounting loose - signal damping
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.