OBD-II reference

All 9.533 generic OBD-II codes, explained in detail.

Causes, inspection steps and sources — a comprehensive DIY archive. Created and maintained with love for the detail. Good luck and have fun!

Powertrain generic / SAE

P210A

Throttle Actuator B Control Motor Circuit/Open

The drive circuit of throttle actuator motor B is open. Throttle B is the secondary throttle on engines with two throttle bodies — typically used for tumble flap or charge-motion control.

SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number1 / 0A

Possible causes

  • Motor winding open high
  • Open wire to motor medium
  • Pin pushed back out of connector body low

Symptoms

  • Check engine light on
  • Reduced throttle response, possible limp mode
  • Hesitation or surging
  • Idle too high or too low

Inspection / repair

  • Difficulty: medium
  • DIY: possible
  • Estimated cost: 80–700 €
  • Estimated time: 0.5–3 h
  • Component: throttle actuator b
  • Component: throttle motor b
  • Component: throttle harness
  • MIL / check engine light
  • emissions-relevant

Sources

References

How to read OBD-II codes

The first letter names the vehicle system, the second digit distinguishes generic from manufacturer-specific, the remaining digits group fault area and number.

PPowertrain: engine, transmission, emissions
BBody: chassis trim, comfort, interior
CChassis: suspension, brakes, steering
UNetwork: CAN, control modules, communication