AutoCodes – Toyota – P2112 2009 Toyota Prius

P2112 2009 Toyota Prius 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 Dirty Throttle Body, Throttle Body Plate Binding, Faulty Throttle Actuator. 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 2009 Toyota Prius indicates Throttle Actuator Control System - Stuck Closed.
Common causes: Common causes include Dirty Throttle Body, Throttle Body Plate Binding, Faulty Throttle Actuator.
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 3,731

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Feb 28, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2112 2009 Toyota Prius 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 2009 Toyota Prius - Throttle Actuator Control System - Stuck Closed - AutoCodes.com — P2112 2009 Toyota Prius Code - Throttle Actuator Control System - Stuck Closed

What does this mean?

What are the Possible Causes of the DTC P2112 2009 Toyota Prius?

Dirty Throttle Body
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 2009 Toyota Prius?

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 2009 Toyota Prius 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 2009 Toyota Prius code?

Need more information on how to fix the P2112 2009 Toyota Prius code? Get Access to Factory Service Manuals

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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 2009 Toyota Prius Code

1. What does OBDII code P2112 mean on a 2009 Toyota Prius?

The code P2112 indicates a problem with the Throttle Actuator Control System, specifically that the throttle actuator is stuck closed.

2. What are the common symptoms of a P2112 code on a 2009 Toyota Prius?

Common symptoms include reduced engine power, lack of acceleration, and the vehicle going into limp mode.

3. What are the possible causes of the P2112 code on a 2009 Toyota Prius?

The code P2112 can be triggered by a faulty throttle actuator, a stuck throttle plate, wiring issues, or a malfunctioning throttle position sensor.

4. How serious is a P2112 code on a 2009 Toyota Prius?

A P2112 code should be taken seriously as it can affect the drivability of the vehicle and may lead to safety concerns if not addressed promptly.

5. Can I still drive my 2009 Toyota Prius with a P2112 code?

It is not recommended to drive your vehicle with a P2112 code, as it can cause performance issues and potentially unsafe driving conditions.

6. How can I diagnose a P2112 code on my 2009 Toyota Prius?

Diagnosing a P2112 code typically involves checking the throttle actuator, throttle plate, wiring connections, and throttle position sensor for any faults or malfunctions.

7. What are some DIY repair tips for a P2112 code on a 2009 Toyota Prius?

DIY repair tips may include checking and cleaning the throttle body, inspecting wiring for damage, and ensuring proper connection of the throttle position sensor.

8. How much does it cost to repair a P2112 code on a 2009 Toyota Prius?

The cost of repairing a P2112 code can vary depending on the exact cause of the issue, but it may involve replacing the throttle actuator or addressing wiring problems, which can range from a few hundred to over a thousand dollars.

9. Can a P2112 code on a 2009 Toyota Prius be reset without repairs?

While you can clear the code temporarily, it is not recommended to reset the code without addressing the underlying issue, as it will likely reappear and potentially worsen over time.

10. Is it necessary to take my 2009 Toyota Prius to a mechanic for a P2112 code repair?

It is advisable to consult a qualified mechanic or technician to properly diagnose and repair a P2112 code on your 2009 Toyota Prius, as it involves intricate components of the throttle control system that may require professional attention.