Powertrain, generic (extended)

P210C Throttle Actuator B Control Motor Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P210C is reserved for a low-side fault in the drive circuit of the second throttle motor, for example a grounded motor lead or an overloaded output stage. No manufacturer documents this code publicly. Makers with two throttles report such faults differently: GM's 23OBDG07 table files a bank 2 short to ground below 0.5 Ohm and driver overtemperature under P210A, and Ford's 2024 summary hangs all throttle B faults on P210A with failure-type bytes. CARB requires circuit faults of output devices to be detected, so where P210C is used it behaves like its bank 1 sibling P2102. Expect the second throttle to be switched off, rough running and reduced power. High-side faults would be P210D, open circuit P210A.

Likely causes

Throttle B motor wire shorted to ground
Shorted or jammed throttle motor B
Faulty bank 2 throttle driver in the ECU

Symptoms

  • Reduced power and rough 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

P210AP210DP210BP2102

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