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.

Other Powertrain codes on this vehicle