Throttle Actuator A Control System - Stuck Open

What it means

The engine computer has detected that the throttle plate stayed open further than commanded and did not return to its closed position. This can cause unwanted high engine speed, so the computer usually cuts fuel or limits power to protect the driver.

Related codes: P2112P2119P2101P2104P0507

Symptoms4

• High idle or sudden surges in engine speed.
• Check engine light on together with the electronic throttle warning light.
• Limp mode with power cut-outs or reduced power.
• The car feels like it keeps pulling after lifting off the pedal.

Possible causes5

• Carbon buildup or a foreign object preventing the plate from closing.
• Weak or broken return spring inside the throttle body.
• Damaged gears or motor in the throttle body.
• Faulty throttle position sensor reporting a wrong position.
• Accelerator pedal caught on a floor mat or object, causing a constant open request.

How to diagnose5

1. First confirm the accelerator pedal is not caught on the floor mat or anything under it.
2. Inspect the throttle plate with the engine off and key off, and confirm it returns to its rest position.
3. Watch commanded and actual throttle position on a scan tool.
4. Check the throttle position sensor and its connector.
5. Check any accompanying throttle sensor or motor codes.

How to fix5

1. Remove whatever is blocking the accelerator pedal.
2. Clean the throttle body and remove any carbon or foreign object, then perform the relearn.
3. Repair the throttle sensor connector or wiring if a fault is found.
4. Replace the throttle body if the spring, gears or motor are damaged.
5. Clear the codes and confirm normal idle returns and the code does not come back.

Repair cost

In Saudi riyals; the highlighted part is the expected range for this fault.

The cost is low when cleaning is enough, and rises to the price of a new throttle body when the fault is mechanical inside it.

Prices are rough estimates for common cars at independent workshops and vary with the car and the source of the part.
Prices last updated: September 2026

Frequently asked questions