Throttle Actuator Control System Forced Limited RPM
The throttle actuator control has detected a fault and limits engine speed to a defined emergency value. The vehicle stays drivable but with severely reduced power until the underlying fault is cleared.
Affected components
- Throttle actuator motor
- Throttle position sensor
- Ecm
Common causes
- High likelihood: Underlying throttle actuator fault
- Medium likelihood: Pedal/throttle correlation fault
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
- A drive cycle may be required after repair
- Reduced-power or limp mode may occur
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.