P2118 2003 Toyota Highlander Code - Throttle Actuator Control Motor Current Range/Performance

P2118 indicates a problem with the throttle actuator control motor's current range or performance, meaning the motor isn't receiving the correct electrical input to function properly.

Symptoms may include reduced engine power, the vehicle going into limp mode, poor throttle response, or the Check Engine Light illuminating.

Common causes include a faulty throttle actuator motor, damaged wiring or connectors in the throttle control system, issues with the electronic throttle body, or a failing engine control module (ECM).

It is generally not recommended to drive with this code active, as it can lead to reduced performance and potentially unsafe driving conditions.

Diagnosis involves inspecting the throttle actuator motor and its wiring, checking for damaged connectors, testing the throttle body for proper operation, and using a scan tool to monitor throttle position sensor data.

Repairs may include replacing the throttle actuator control motor, repairing or replacing damaged wiring or connectors, cleaning or replacing the throttle body, or reprogramming or replacing the ECM.

Yes, a dirty or clogged throttle body can restrict the movement of the throttle plate, leading to performance issues and triggering the P2118 code.

Disconnecting the battery may temporarily clear the code, but it won’t fix the underlying issue. The code will likely return if the problem isn’t resolved.

Repair costs can vary widely but typically range from $150 to $1,000, depending on whether the issue is a simple wiring repair or a complete throttle body or ECM replacement.

Yes, a failing ECM can cause improper signals to the throttle actuator motor, leading to the P2118 code. However, this is less common compared to other causes like a faulty throttle body or wiring issues.