AutoCodes – Toyota – P2102 2005 Toyota Prius

P2102 2005 Toyota Prius Code - Throttle Actuator Control Motor Circuit Low

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: P2102 2005 Toyota Prius indicates Throttle Actuator Control Motor Circuit Low.
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 5,429

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 P2102 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 P2102 2005 Toyota Prius - Throttle Actuator Control Motor Circuit Low - AutoCodes.com — P2102 2005 Toyota Prius Code - Throttle Actuator Control Motor Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2102 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 P2102 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 P2102 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 P2102 2005 Toyota Prius code?

Need more information on how to fix the P2102 2005 Toyota Prius code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2102 2005 Toyota Prius 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 P2102 2005 Toyota Prius Code

1. What are the common symptoms of OBDII code P2102 in a 2005 Toyota Prius?

- Common symptoms include reduced engine power, sluggish acceleration, and the vehicle going into "limp mode" to protect the engine.

2. What does OBDII code P2102 indicate in a 2005 Toyota Prius?

- OBDII code P2102 indicates a Throttle Actuator Control Motor Circuit Low issue in the 2005 Toyota Prius, specifically relating to the throttle actuator motor.

3. What are the possible causes of OBDII code P2102 in a 2005 Toyota Prius?

- Possible causes of P2102 in a 2005 Toyota Prius include a faulty throttle actuator control motor, damaged wiring or connectors, or a problem with the engine control module (ECM).

4. How can I diagnose the Throttle Actuator Control Motor Circuit Low issue in my 2005 Toyota Prius?

- To diagnose P2102, you can use an OBDII scanner to read the code and perform a visual inspection of the throttle actuator motor, wiring, and connectors for any visible damage.

5. Can I still drive my 2005 Toyota Prius with OBDII code P2102?

- It is not recommended to drive your 2005 Toyota Prius with OBDII code P2102 as it can lead to further damage and potentially unsafe driving conditions due to the reduced engine power.

6. How can I repair OBDII code P2102 in my 2005 Toyota Prius?

- Repairing P2102 may involve replacing the throttle actuator control motor, repairing or replacing damaged wiring or connectors, or reprogramming the engine control module (ECM).

7. Is it safe to reset the OBDII code P2102 in my 2005 Toyota Prius using an OBDII scanner?

- While resetting the code may temporarily clear the warning light, it is crucial to diagnose and fix the underlying issue causing P2102 to ensure safe and reliable operation of your vehicle.

8. Can a DIY enthusiast fix OBDII code P2102 in a 2005 Toyota Prius?

- DIY enthusiasts with automotive repair experience may be able to diagnose and repair P2102 in a 2005 Toyota Prius, but it is recommended to consult a professional if unsure about the repair process.

9. How much does it typically cost to repair OBDII code P2102 in a 2005 Toyota Prius?

- The cost of repairing P2102 in a 2005 Toyota Prius can vary depending on the root cause, but it may range from $200 to $600 for parts and labor at a repair shop.

10. Can OBDII code P2102 in a 2005 Toyota Prius affect fuel efficiency?

- Yes, OBDII code P2102 can affect fuel efficiency in a 2005 Toyota Prius due to the impact on engine performance and throttle control, potentially leading to increased fuel consumption.

Discuss the causes and fixes for P2102 2005 Toyota Prius OBDII Code

Submit a New Comment

Billie j saby
Date: June 3, 2019 at 1:49 am

How do i reset the codes

Reply to Comment
OBDIITech
Date: June 3, 2019 at 4:06 pm

You have to fix the problem first and drive your vehicle for a few times, or clear the codes with an OBDII scanner after fixing the problem.

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