Throttle Actuator A Control Exceeded Learning Limit
The required adaptation offset for throttle actuator A exceeds the calibrated learning window. Mechanical wear, deposit build-up, or sensor drift beyond compensation.
Affected components
- Throttle actuator a
- Throttle position sensor
- Ecm
Common causes
- High likelihood: Deposits on throttle plate or bore
- Medium likelihood: TPS reference drifted
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
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.