AutoCodes – Toyota – P2103 2005 Toyota Prius

P2103 2005 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 2005 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 5,282

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 2005 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 2005 Toyota Prius - Throttle Actuator Control Motor Circuit High - AutoCodes.com — P2103 2005 Toyota Prius Code - Throttle Actuator Control Motor Circuit High

What does this mean?

What are the Possible Causes of the DTC P2103 2005 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 2005 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 2005 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 2005 Toyota Prius code?

Need more information on how to fix the P2103 2005 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 2005 Toyota Prius Code

1. What are the common symptoms of OBDII code P2103 in a 2005 Toyota Prius?

- Common symptoms include the Check Engine Light turning on, reduced engine power, difficulty accelerating, and potential stalling of the vehicle.

2. What does OBDII code P2103 indicate in a 2005 Toyota Prius?

- OBDII code P2103 indicates a problem with the Throttle Actuator Control Motor Circuit High in the electronic throttle control system of the vehicle.

3. What are the possible causes of OBDII code P2103 in a 2005 Toyota Prius?

- Possible causes include a faulty throttle actuator control motor, damaged wiring or connectors in the circuit, a malfunctioning throttle position sensor, or issues with the engine control module.

4. How can I diagnose OBDII code P2103 in my 2005 Toyota Prius?

- Diagnosis typically involves using a diagnostic scanner to retrieve the trouble code, inspecting the throttle actuator control motor and related components, and testing the circuit for continuity and proper voltage.

5. Can I continue to drive my 2005 Toyota Prius with OBDII code P2103?

- It is not recommended to drive the vehicle with this code present, as it can lead to unsafe driving conditions and potential damage to the engine or other components.

6. How can I repair OBDII code P2103 in my 2005 Toyota Prius?

- Repair options may include replacing the throttle actuator control motor, repairing or replacing damaged wiring or connectors, recalibrating the throttle position sensor, or reprogramming the engine control module.

7. Is it possible to reset OBDII code P2103 in a 2005 Toyota Prius without making repairs?

- While clearing the trouble code may temporarily turn off the Check Engine Light, it is important to address the underlying issue causing the code to prevent further problems.

8. Are there any preventive maintenance tips to avoid OBDII code P2103 in a 2005 Toyota Prius?

- Regularly inspecting and cleaning the throttle body, ensuring proper engine maintenance, and addressing any related trouble codes promptly can help prevent issues with the throttle actuator control motor circuit.

9. Can a DIY enthusiast fix OBDII code P2103 in a 2005 Toyota Prius?

- Depending on their skill level and access to tools, DIY enthusiasts may be able to diagnose and repair OBDII code P2103, but complex electrical issues may require professional assistance.

10. How much does it typically cost to repair OBDII code P2103 in a 2005 Toyota Prius?

- The cost of repairs can vary depending on the specific cause of the code and the labor rates in your area, but it may range from $200 to $600 or more, including parts and labor.