AutoCodes – Toyota – P2103 2007 Toyota Prius

P2103 2007 Toyota Prius Code - Throttle Actuator Control Motor Circuit High

Quick Answer

The throttle actuator is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve. Common causes include Dirty throttle body, Faulty Throttle Actuator Control Motor, Throttle Actuator Control Motor 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: P2103 2007 Toyota Prius indicates Throttle Actuator Control Motor Circuit High.
Common causes: Common causes include Dirty throttle body, Faulty Throttle Actuator Control Motor, Throttle Actuator Control Motor 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 5,516

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 P2103 2007 Toyota Prius Description

The throttle actuator is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve. Power supply for the throttle control motor is provided to the ECM via throttle control motor relay. The throttle control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not provided to the ECM. 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. This feedback allows the ECM to control the throttle actuator and monitor the throttle opening angle in response to driver inputs.

OBDII Code P2103 2007 Toyota Prius - Throttle Actuator Control Motor Circuit High - AutoCodes.com — P2103 2007 Toyota Prius Code - Throttle Actuator Control Motor Circuit High

What does this mean?

What are the Possible Causes of the DTC P2103 2007 Toyota Prius?

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

How to Fix the DTC P2103 2007 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 P2103 2007 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 P2103 2007 Toyota Prius code?

Need more information on how to fix the P2103 2007 Toyota Prius code? Get Access to Factory Service Manuals

Need Help with the 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 P2103 2007 Toyota Prius Code

1. What are common symptoms of OBDII code P2103 in a 2007 Toyota Prius?

- Common symptoms include the Check Engine light illuminating, reduced engine power, and potential issues with the vehicle's acceleration.

2. What causes the OBDII code P2103 in a 2007 Toyota Prius?

- The code P2103 is typically triggered by a malfunction in the throttle actuator control motor circuit, often caused by wiring issues, a faulty motor, or a problem with the throttle body.

3. How can I diagnose the OBDII code P2103 in my 2007 Toyota Prius?

- Diagnosing the code P2103 involves using an OBDII scanner to retrieve the specific fault code, checking the throttle actuator control motor circuit and wiring for any issues, and testing the throttle actuator motor itself.

4. Is it safe to drive my 2007 Toyota Prius with the OBDII code P2103 present?

- It is not recommended to drive your vehicle with the code P2103, as it can lead to performance issues and potentially unsafe driving conditions. It's best to address the issue promptly.

5. Can I repair the OBDII code P2103 in my 2007 Toyota Prius myself?

- Repairing the code P2103 may require advanced automotive knowledge and tools. It's recommended to consult a professional mechanic to properly diagnose and repair the issue.

6. How much does it typically cost to repair the OBDII code P2103 in a 2007 Toyota Prius?

- The cost of repairing the code P2103 can vary depending on the underlying cause of the issue. Repair costs may include parts and labor expenses, which can range from a few hundred to over a thousand dollars.

7. Are there any preventive measures to avoid the OBDII code P2103 in a 2007 Toyota Prius?

- Regular maintenance checks, such as inspecting wiring harnesses and keeping the throttle body clean, can help prevent issues that may trigger the code P2103.

8. Can a faulty throttle position sensor cause the OBDII code P2103 in a 2007 Toyota Prius?

- While a faulty throttle position sensor can cause related performance issues, it is not a common cause of the specific code P2103. It's important to diagnose the exact cause of the code.

9. Will resetting the OBDII code P2103 in my 2007 Toyota Prius make it go away permanently?

- Resetting the code may temporarily turn off the Check Engine light, but if the underlying issue causing the code is not addressed, it is likely to reappear. It's crucial to diagnose and repair the root cause.

10. How long does it take to repair the OBDII code P2103 in a 2007 Toyota Prius?

- The repair time for the code P2103 can vary depending on the extent of the issue and the availability of parts. It may take a few hours to a day for a mechanic to diagnose and fix the problem.