Throttle Actuator B Control System - Forced Limited RPM
Throttle B control has detected an unsafe condition and forced an RPM limit. Common protective response when motor current, throttle position feedback, or supply voltage on the B path is out of spec.
Affected components
- Throttle actuator b
- Throttle position sensor b
Common causes
- High likelihood: Protection mode triggered by paired throttle-B 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
- 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.