Throttle Actuator Control System Forced Below Limit RPM
The throttle actuator system has dropped engine speed below the normal limp limit because of a more serious fault. The engine may run only at idle or stall.
Affected components
- Throttle actuator motor
- Throttle position sensor
Common causes
- High likelihood: Severe throttle actuator fault
- Medium likelihood: TPS signal lost
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
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.