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2002 VOLVO S80
2.9L I6•AWD•AUTOMATIC•gas•B6294S
5 active safety recalls on this vehicle — view recalls
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Repairs0Labor1005Torque6617Fluid14DTC1718Battery2Maintenance0Recalls5
P2100critical severityPowertrain

Throttle Actuator Control Motor Circuit Open

on 2002 Volvo S80 2.9L I6 · AWD

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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