OBD-II · Engine and powertrain (P)
P2112
Throttle actuator control system stuck closed
What it means
The electronic throttle plate will not open as far as the ECU commands.
Symptoms
- very little power or no response to the accelerator
- stalling or low idle
- engine warning light
Likely causes, most likely first
| No. | Cause |
|---|---|
| 01 | carbon or oil build-up in the throttle body |
| 02 | ice in the throttle body in cold weather |
| 03 | failed throttle motor or gears |
| 04 | motor wiring fault |
What to check, step by step
- 01Check the battery and charging voltage
- 02Inspect the throttle body for carbon, oil or ice that stops the plate moving, and clean it with the ignition off
- 03Check the motor connector and wiring for corrosion and loose pins
- 04Run the throttle adaptation (basic settings) with a scan tool and watch actual versus commanded position
- 05Replace the throttle body if the motor or gears are worn