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Engine-Codes – Toyota – P2118 2005 Toyota Prius

P2118 2005 Toyota Prius Code - Throttle Actuator Control Motor Current Range/Performance

Quick Answer

The P2118 diagnostic trouble code (DTC) for a 2005 Toyota Prius refers to the Throttle Actuator Control Motor Current Range/Performance. Common causes include Malfunctioning throttle actuator control motor, Faulty throttle position sensor, Wiring or connector issues in the throttle actuator control circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2118 2005 Toyota Prius indicates Throttle Actuator Control Motor Current Range/Performance.
Common causes
Common causes include Malfunctioning throttle actuator control motor, Faulty throttle position sensor, Wiring or connector issues in the throttle actuator control circuit.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P2118 2005 Toyota Prius Description

The P2118 diagnostic trouble code (DTC) for a 2005 Toyota Prius refers to the Throttle Actuator Control Motor Current Range/Performance. This code indicates that the Engine Control Module (ECM) has detected an issue with the throttle actuator control motor's current range or performance. The throttle actuator control motor is responsible for controlling the opening and closing of the throttle valve, which regulates the amount of air entering the engine. This, in turn, affects the engine's performance and fuel efficiency.

OBDII Code P2118 2005 Toyota Prius - Throttle Actuator Control Motor Current Range/Performance
P2118 2005 Toyota Prius Code - Throttle Actuator Control Motor Current Range/Performance

Common Causes of P2118 2005 Toyota Prius

  1. Malfunctioning throttle actuator control motor.
  2. Faulty throttle position sensor.
  3. Wiring or connector issues in the throttle actuator control circuit.
  4. ECM software or hardware problems.
  5. Environmental factors such as moisture or corrosion affecting electrical connections.

Symptoms of P2118 2005 Toyota Prius

  1. Hesitation or lack of response when pressing the accelerator pedal.
  2. Rough idling or engine misfires.
  3. Reduced power or acceleration.
  4. Stalling or difficulty starting the engine.
  5. Illumination of the Check Engine Light.

How to Fix P2118 2005 Toyota Prius

  1. Diagnose the issue using a scan tool to retrieve the trouble codes and perform a thorough inspection of the throttle actuator control system.
  2. Test the throttle actuator control motor, throttle position sensor, and related wiring for proper operation and continuity.
  3. Replace any faulty components such as the throttle actuator control motor, throttle position sensor, or damaged wiring.
  4. Clear the trouble codes from the ECM memory and perform a test drive to ensure the issue has been resolved.
  5. If necessary, reprogram the ECM with the latest software updates to address any underlying software issues.

Cost to Fix P2118 2005 Toyota Prius

The typical repair costs for addressing a P2118 code on a 2005 Toyota Prius can range from $200 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops commonly charge between $80 and $150 per hour for labor. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It is advisable to check local rates for a more precise estimate before proceeding with the repair.

When is the Code Detected?

The Engine Control Module (ECM) monitors the battery supply voltage applied to the electronic throttle actuator. When the power supply voltage drops below the threshold, the ECM concludes that the power supply circuit has an open circuit. A DTC is set and the MIL is turned on.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2118 2005 Toyota Prius Code

1. What are the common symptoms of OBDII code P2118 in a 2005 Toyota Prius?

The common symptoms of OBDII code P2118 in a 2005 Toyota Prius include reduced engine power, acceleration issues, and the vehicle going into "limp mode."

2. What does OBDII code P2118 on a 2005 Toyota Prius indicate?

OBDII code P2118 on a 2005 Toyota Prius indicates an issue with the Throttle Actuator Control Motor Current Range/Performance.

3. What are the possible causes of OBDII code P2118 in a 2005 Toyota Prius?

Possible causes of OBDII code P2118 in a 2005 Toyota Prius include a faulty throttle actuator control motor, wiring issues, or a problem with the throttle position sensor.

4. How can I diagnose the OBDII code P2118 in my 2005 Toyota Prius?

Diagnosing OBDII code P2118 in a 2005 Toyota Prius involves checking the throttle actuator control motor, inspecting the wiring for any damage, and testing the throttle position sensor for proper function.

5. Can I drive my 2005 Toyota Prius with OBDII code P2118?

It is not recommended to drive your 2005 Toyota Prius with OBDII code P2118, as it can lead to further damage and safety hazards due to potential acceleration issues.

6. How can I repair OBDII code P2118 in my 2005 Toyota Prius?

Repairing OBDII code P2118 in a 2005 Toyota Prius may involve replacing the throttle actuator control motor, repairing any damaged wiring, or recalibrating the throttle position sensor.

7. Is it safe to continue driving if the OBDII code P2118 light is on in my 2005 Toyota Prius?

It is best to avoid driving your 2005 Toyota Prius if the OBDII code P2118 light is on, as it can affect the vehicle's performance and safety.

8. Can a DIY enthusiast fix OBDII code P2118 in a 2005 Toyota Prius?

While some repairs related to OBDII code P2118 in a 2005 Toyota Prius may be possible for a DIY enthusiast, it is recommended to seek professional help for accurate diagnosis and repair.

9. How much does it cost to fix OBDII code P2118 in a 2005 Toyota Prius?

The cost to fix OBDII code P2118 in a 2005 Toyota Prius can vary depending on the specific issue, parts needed, and labor costs at a repair shop. It is advisable to get a detailed quote from a professional mechanic.

10. Will resetting the OBDII code P2118 in my 2005 Toyota Prius make it go away permanently?

Resetting the OBDII code P2118 in a 2005 Toyota Prius may clear the warning light temporarily, but the issue causing the code will persist until properly diagnosed and repaired.

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