P210B
Throttle Actuator B Control Motor Circuit Range/Performance
Throttle actuator B motor responds electrically but does not move the throttle plate as commanded — typically high-resistance brushes, partial winding fault, or a sticky throttle bore.
- 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.
- Motor brushes wornCommon
- Carbon buildup at throttle platePossible
- Sensor element aged beyond calibration windowLess likely
Parts involved
- Throttle Actuator B
- Throttle Motor B
P210B 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.