Engine-CodesToyota – P2112 2004 Toyota Highlander

P2112 2004 Toyota Highlander Code - Throttle Actuator Control System - Stuck Closed

Quick Answer

The P2112 diagnostic trouble code (DTC) for a 2004 Toyota Highlander indicates a problem with the Throttle Actuator Control System being stuck closed. Common causes include Faulty throttle body, Malfunctioning throttle position sensor, Wiring issues. 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
P2112 2004 Toyota Highlander indicates Throttle Actuator Control System - Stuck Closed.
Common causes
Common causes include Faulty throttle body, Malfunctioning throttle position sensor, Wiring issues.
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.
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P2112 2004 Toyota Highlander Description

The P2112 diagnostic trouble code (DTC) for a 2004 Toyota Highlander indicates a problem with the Throttle Actuator Control System being stuck closed. This code is specifically related to the electronic throttle control system, which regulates the amount of air entering the engine to control the vehicle's speed. When the throttle actuator is stuck closed, it means that the throttle plate inside the throttle body is not opening properly, leading to restricted airflow and affecting the engine's performance.

OBDII Code P2112 2004 Toyota Highlander - Throttle Actuator Control System - Stuck Closed
P2112 2004 Toyota Highlander Code - Throttle Actuator Control System - Stuck Closed

Common Causes of P2112 2004 Toyota Highlander

  1. Faulty throttle body
  2. Malfunctioning throttle position sensor
  3. Wiring issues
  4. Electronic control module problem
  5. Carbon buildup in the throttle body

Symptoms of P2112 2004 Toyota Highlander

  1. Lack of power or acceleration
  2. Hesitation or jerking during acceleration
  3. Engine stalling or rough idling
  4. Reduced fuel efficiency
  5. Limp mode activation

How to Fix P2112 2004 Toyota Highlander

  1. Diagnose the issue by using a scan tool to confirm the P2112 code and inspecting the throttle body and related components.
  2. Clean the throttle body to remove any carbon buildup that may be causing the throttle plate to stick.
  3. Test the throttle position sensor and replace it if necessary.
  4. Inspect the wiring for any damage or loose connections and repair as needed.
  5. Replace the throttle body if it is found to be faulty and causing the issue.

Cost to Fix P2112 2004 Toyota Highlander

The cost of repairing a P2112 code on a 2004 Toyota Highlander can vary depending on the specific cause of the issue and the labor rates in your area. On average, the parts for this repair can range from $200 to $500, with labor costs adding another $100 to $200. Keep in mind that these are rough estimates, and actual costs may differ based on your location and the specific repair shop you choose. It's recommended to get quotes from multiple shops to find the best price for the repair.

When is the Code Detected?

Throttle valve locked during Engine Control Module (ECM) order to open

Need more information about the P2112 2004 Toyota Highlander code?

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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 P2112 2004 Toyota Highlander Code

1. What does the OBDII code P2112 mean on a 2004 Toyota Highlander?

P2112 indicates that the throttle actuator control system is stuck in the closed position, meaning the throttle plate isn’t opening as it should.

2. What are the common symptoms of the P2112 code in a 2004 Toyota Highlander?

Symptoms may include reduced engine power, difficulty accelerating, the vehicle going into limp mode, and an illuminated check engine light.

3. What causes the P2112 code to appear in a 2004 Toyota Highlander?

Common causes include a faulty throttle body, a damaged throttle position sensor, wiring or connection issues, or carbon buildup obstructing the throttle plate.

4. Can I drive my 2004 Toyota Highlander with the P2112 code?

Driving with the P2112 code is not recommended, as it can lead to poor engine performance, limited acceleration, and potential safety issues.

5. How do I fix the P2112 code on a 2004 Toyota Highlander?

Fixes may involve cleaning the throttle body, repairing or replacing the throttle actuator, checking and repairing wiring, or replacing the throttle position sensor.

6. How much does it cost to repair the P2112 code on a 2004 Toyota Highlander?

Repair costs vary but typically range from $150 to $700, depending on whether you need a throttle body cleaning, sensor replacement, or actuator repair.

7. Can a dirty throttle body cause the P2112 code?

Yes, carbon buildup on the throttle body can cause the throttle plate to stick, triggering the P2112 code.

8. How can I prevent the P2112 code from reoccurring in my 2004 Toyota Highlander?

Regularly clean the throttle body, inspect the wiring and connections, and follow routine maintenance schedules.

9. Will clearing the P2112 code with a scanner fix the issue?

Clearing the code may turn off the check engine light temporarily, but the underlying problem must be addressed to prevent the code from returning.

10. Is the P2112 code specific to Toyota vehicles?

No, the P2112 code can appear in any vehicle with an electronic throttle control system, but the repairs and diagnostics may vary by make and model.

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