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P2112 Toyota Code - Throttle Actuator Control System Stuck Closed

Quick Answer

The throttle actuator is operated by the Engine Control Module (ECM) and opens and closes the throttle valve using gears. Common causes include Dirty throttle body, Faulty Throttle Actuator, Throttle Actuator harness is open. 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 Toyota indicates Throttle Actuator Control System Stuck Closed.
Common causes
Common causes include Dirty throttle body, Faulty Throttle Actuator, Throttle Actuator harness is open.
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.
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Code Popularity 36,356
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2022
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Code P2112 Toyota Description

The throttle actuator is operated by the Engine Control Module (ECM) and 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 with motor body assembly. The throttle position sensor provides feedback to the ECM. This feedback allows the ECM to appropriately control the throttle actuator and monitor the throttle opening angle as the ECM responds to driver inputs.
The ECM determines that there is a malfunction in the Electronic Throttle Control System (ETCS) when the throttle valve remains at a fixed angle despite a high drive current from the ECM. The ECM illuminates the MIL and stores a Diagnostic Trouble Code (DTC).
OBDII Code P2112 Toyota - Throttle Actuator Control System Stuck Closed - AutoCodes.com
P2112 Toyota Code - Throttle Actuator Control System Stuck Closed
What does this mean?

What are the Possible Causes of the DTC P2112 Toyota?

  • Dirty throttle body
  • Faulty Throttle Actuator
  • Throttle Actuator harness is open
  • Throttle Actuator circuit poor electrical connection
  • Faulty Throttle with Motor Body Assembly
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P2112 Toyota?

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 Toyota 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 Toyota code?

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

Need Help with the Code?

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

Information for Specific Toyota Models

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 Toyota Code

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

P2112 indicates that the throttle actuator control system is stuck in the closed position, meaning the throttle plate is not opening as commanded by the engine control module (ECM).

2. What are the symptoms of the P2112 code on a Toyota?

Common symptoms include reduced engine power, poor acceleration, a throttle unresponsive to input, the engine going into limp mode, and the check engine light turning on.

3. What causes the P2112 code to appear on a Toyota?

Potential causes include a malfunctioning throttle body, carbon buildup on the throttle plate, a faulty throttle position sensor, damaged wiring or connectors, or issues with the ECM.

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

Driving with the P2112 code is not recommended, as the vehicle may enter limp mode, resulting in reduced power and performance, which could be unsafe in certain situations.

5. How can I fix the P2112 code on a Toyota?

Start by cleaning the throttle body to remove carbon buildup. If the issue persists, inspect the throttle actuator motor, throttle position sensor, and related wiring for damage. Replace faulty components as needed.

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

The cost varies depending on the cause. Throttle body cleaning usually costs $100-$200, while replacing the throttle body or related sensors can range from $300 to $1,000, including parts and labor.

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

Yes, a dirty or carbon-clogged throttle body can cause the throttle plate to stick, triggering the P2112 code.

8. How do I diagnose the P2112 code on my Toyota?

Use an OBDII scanner to confirm the code, then visually inspect the throttle body, wiring, and connectors. Test the throttle actuator motor and throttle position sensor with a multimeter if needed.

9. Will resetting the check engine light fix the P2112 code on a Toyota?

Resetting the light may clear the code temporarily, but the underlying issue must be addressed to prevent the code from returning.

10. Can a faulty ECM cause the P2112 code on a Toyota?

While rare, a malfunctioning ECM can cause the P2112 code if it fails to properly control the throttle actuator system.

Discuss the causes and fixes for P2112 Toyota OBDII Code

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  • Toyota Yaris 1.33 HAT vvt-i TR, 59 reg (53,000 miles): Got check engine light when trying to reverse out of parking space and engine cut out. Restarted it and, after a couple of goes, got it to rev and was then ok. Dealer says P2112 code found - followed Toyota bulletin and updated ECU software and reset codes. Its been ok since then.

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  • Thank you for the information!!

    Reply to Comment
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