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2002 BMW M5
4.9L V8 S62•RWD•MANUAL•gas•S62B50
2 active safety recalls on this vehicle — view recalls
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Repairs0Labor494Torque2385Fluid8DTC1267Battery1Maintenance0Recalls2
P2100critical severityPowertrain

Throttle Actuator Control Motor Circuit Open

on 2002 BMW M5 4.9L V8 S62 · RWD

What this code means

Open circuit detected in the electronic throttle body motor drive circuit.

Symptoms

  • Reduced power/limp mode
  • Check engine light
  • Throttle unresponsive
  • Engine may not rev above idle

Common causes

  • Failed throttle body motor
  • Broken wiring
  • Corroded connector
  • ECM driver failure

Diagnostic steps

  1. Check throttle body connector
  2. Measure motor resistance (2-7 ohms typical)
  3. Inspect wiring to ECM
  4. Test ECM motor driver output

Repair notes

Replace throttle body assembly or repair wiring. ECM replacement rarely needed.

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