Throttle Actuator Control Motor Circuit Open
The drive-by-wire throttle motor circuit is open — no current flow detected. The ECU loses authority over the throttle plate and forces a limp-home with reduced power.
Affected components
- Throttle actuator motor
- Throttle body wiring
Common causes
- High likelihood: Throttle motor failed
- Medium likelihood: Connector loose or corroded
- Medium likelihood: Wiring break to throttle body
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.