Throttle Actuator A Control Motor Circuit Range/Performance

What it means

The engine computer has found that the throttle motor is not moving the throttle plate to the commanded position as it should, so the actual position does not match what the computer asked for. The engine usually enters limp mode with reduced power.

Related codes: P2100P2119P2118P2135P0121

Symptoms4

• Check engine light on, sometimes with the electronic throttle warning light.
• Loss of power and limp mode.
• Unstable idle speed.
• Occasional stalling when slowing down.

Possible causes5

• Carbon buildup inside the throttle body making the plate move stiffly.
• Weak motor or worn gears inside the throttle body.
• Extra resistance in the connector or wiring from corrosion.
• Low battery or charging system voltage.
• Faulty throttle position sensor built into the throttle body.

How to diagnose5

1. Read all stored codes and check for any low system voltage code such as P0562.
2. Test the battery and charging system.
3. Remove the intake duct and inspect the throttle plate for carbon or binding with the engine off.
4. Watch commanded and actual throttle position on a scan tool and compare them.
5. Inspect the connector and wiring for corrosion or high resistance.

How to fix5

1. Clean the throttle body with a dedicated cleaner, then perform the relearn procedure.
2. Repair a corroded connector or wiring.
3. Fix a weak battery or charging problem if found.
4. Replace the throttle body if the fault remains after cleaning and circuit repair.
5. Clear the codes and confirm the code does not return after driving.

Repair cost

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

A throttle body cleaning often fixes it at low cost; the cost rises when a new throttle body is needed.

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