Powertrain, generic (extended)

P210D Throttle Actuator B Control Motor Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P210D covers the high-side fault of the second throttle drive: a voltage on the motor B circuit that suggests a short to battery, or a supply that stays live when the stage should be off. No manufacturer documents this code publicly. On twin-throttle engines that publish their logic, GM (23OBDG07) and Ford (2024) collect the electrical faults of throttle B under P210A, so P210D will rarely be seen. The CARB rule for output components still applies: an electrical fault in an actuator that affects emissions must be detected and stored. If it appears, treat it like P2103 for bank 1: inspect wiring and connector of throttle B for chafing to a positive feed, then the motor and the ECU output. The engine runs on reduced power.

Likely causes

Throttle B motor wire shorted to battery voltage
Damaged or wet connector at throttle body B
Faulty bank 2 output stage in the ECU

Symptoms

  • Reduced power and uneven running
  • Engine warning lamp on

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€40–800
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

throttle actuator b

Related codes

P210AP210CP210BP2103

References: law.cornell.edu, gsi.ext.gm.com, fordservicecontent.com.