Powertrain, generic (extended)

P210B Throttle Actuator B Control Motor Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P210B is the position-control check for the second throttle on twin-throttle engines. The controller compares the commanded opening of throttle B with the measured one; GM's 23OBDG07 table flags a deviation beyond a rate-dependent limit for 0.5 s, one trip. Ford lists P210B with MIL and wrench lamp for its dual-throttle applications (2020-2023) and from 2024 shows it as P210A with byte 95, the type Ford describes as cross-wired on the A side. Mercedes-AMG M177 V8s store it as throttle actuator 2 signal above limit, together with P2101; the bulletin blames high resistance in the connector pins of both actuators. Bank 1 counterpart is P2101; an open circuit is P210A, motor current P211C.

Likely causes

High resistance at throttle B connector pins
Deposits or ice making throttle B sluggish
Worn gears or motor in throttle body B
Motor leads swapped after repair work

Symptoms

  • Engine warning lamp and reduced power
  • Uneven running between the two banks
  • Limp mode

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–900
Time0.5–3 h

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

Parts involved

throttle actuator bthrottle motor b

Related codes

P2101P210AP211CP211DP211AP211B

References: gsi.ext.gm.com, fordservicecontent.com, fordservicecontent.com, static.nhtsa.gov.