P2118
Throttle Actuator Control Motor Current Range/Performance
The current draw of the throttle motor lies outside the expected range — either much higher (binding plate) or much lower (worn brushes, open winding) than calibrated.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Symptoms
- Check engine light on
- Reduced throttle response, possible limp mode
- Hesitation or surging
- Idle too high or too low
Common causes
Ordered by how often each turns out to be the cause.
- Plate binding from carbonCommon
- Motor windings aged or openPossible
- Sensor element aged beyond calibration windowLess likely
Parts involved
- Throttle Actuator Motor
- Throttle Body
P2118 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.