AutoCodes – Toyota – P2112 2002 Toyota Highlander

P2112 2002 Toyota Highlander Code - Throttle Actuator Control System - Stuck Closed

Quick Answer

The throttle actuator is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve using gears. Common causes include Throttle Body Plate Binding, Faulty Throttle Actuator, Throttle Actuator harness is open or shorted. 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 2002 Toyota Highlander indicates Throttle Actuator Control System - Stuck Closed.
Common causes
Common causes include Throttle Body Plate Binding, Faulty Throttle Actuator, Throttle Actuator harness is open or shorted.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,276
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Feb 28, 2019
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Code P2112 2002 Toyota Highlander Description

The throttle actuator is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve using gears. The opening angle of the throttle valve is detected by the throttle position sensor, which is mounted on the throttle body. The throttle position sensor provides feedback to the ECM to control the throttle actuator and set the throttle valve angle in response to driver inputs.
OBDII Code P2112 2002 Toyota Highlander - Throttle Actuator Control System - Stuck Closed - AutoCodes.com
P2112 2002 Toyota Highlander Code - Throttle Actuator Control System - Stuck Closed

What are the Possible Causes of the DTC P2112 2002 Toyota Highlander?

  • Throttle Body Plate Binding
  • Faulty Throttle Actuator
  • Throttle Actuator harness is open or shorted
  • Throttle Actuator circuit poor electrical connection

How to Fix the DTC P2112 2002 Toyota Highlander?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2112 2002 Toyota Highlander code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2112 2002 Toyota Highlander code?

Need more information on how to fix the P2112 2002 Toyota Highlander code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2112 2002 Toyota Highlander code diagnosed by a professional: Find a repair shop in your area

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 2002 Toyota Highlander Code

1. What does OBDII code P2112 mean for a 2002 Toyota Highlander?

The code P2112 indicates a potential issue with the Throttle Actuator Control System being stuck closed in a 2002 Toyota Highlander.

2. What are the common symptoms of a Throttle Actuator Control System - Stuck Closed issue?

Common symptoms include reduced engine power, rough idling, poor acceleration, and the vehicle going into "limp mode" where it may only operate at a limited speed.

3. What are the possible causes of the Throttle Actuator Control System being stuck closed in a 2002 Toyota Highlander?

Potential causes include a faulty throttle body, issues with the throttle actuator control motor, wiring problems, or a malfunctioning throttle position sensor.

4. How can I diagnose a Throttle Actuator Control System issue in my 2002 Toyota Highlander?

Diagnosis typically involves using an OBDII scanner to read the fault codes, conducting a visual inspection of the throttle body and related components, and testing the throttle position sensor and control motor.

5. Can I continue driving my 2002 Toyota Highlander with a P2112 code?

It is not recommended to drive your vehicle with a P2112 code as it can lead to further damage and potentially unsafe driving conditions. It is advisable to address the issue promptly.

6. How can I repair a Throttle Actuator Control System - Stuck Closed problem in my 2002 Toyota Highlander?

Repair options may include cleaning or replacing the throttle body, repairing or replacing the throttle actuator control motor, checking and fixing any wiring issues, or replacing the throttle position sensor.

7. Will resetting the OBDII code P2112 in my 2002 Toyota Highlander solve the issue?

Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the Throttle Actuator Control System to be stuck closed. Proper diagnosis and repair are necessary.

8. Can a DIY enthusiast fix a P2112 code issue in a 2002 Toyota Highlander?

Depending on your skill level and access to tools, some DIY enthusiasts may be able to address the Throttle Actuator Control System problem. However, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

9. How much does it typically cost to repair a Throttle Actuator Control System - Stuck Closed issue in a 2002 Toyota Highlander?

The cost of repairing a P2112 code can vary depending on the specific cause of the problem, the parts needed, and labor costs. It is advisable to obtain quotes from different mechanics or repair shops.

10. Are there any preventative measures to avoid future occurrences of a Throttle Actuator Control System issue in a 2002 Toyota Highlander?

Regular maintenance, such as cleaning the throttle body and ensuring proper wiring connections, can help prevent issues with the Throttle Actuator Control System in your 2002 Toyota Highlander.

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