P210BThrottle Actuator B Control Motor Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- Engine warning lamp and reduced power
- Uneven running between the two banks
- Limp mode
- Likely causes
- LikelyHigh resistance at throttle B connector pins
- PossibleDeposits or ice making throttle B sluggish
- PossibleWorn gears or motor in throttle body B
- RareMotor leads swapped after repair work
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.