Engine-Codes.com
Engine-Codes – Toyota – P2120 2007 Toyota Highlander

P2120 2007 Toyota Highlander Code - Throttle Pedal Position Sensor/Switch 'D' Circuit

Quick Answer

The P2120 code for a 2007 Toyota Highlander indicates a problem with the Throttle Pedal Position Sensor/Switch 'D' Circuit. Common causes include Faulty throttle pedal position sensor, Wiring issues or shorts in the circuit, Corrosion or poor connections in the sensor circuit. 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
P2120 2007 Toyota Highlander indicates Throttle Pedal Position Sensor/Switch 'D' Circuit.
Common causes
Common causes include Faulty throttle pedal position sensor, Wiring issues or shorts in the circuit, Corrosion or poor connections in the sensor circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P2120 2007 Toyota Highlander Description

The P2120 code for a 2007 Toyota Highlander indicates a problem with the Throttle Pedal Position Sensor/Switch 'D' Circuit. This sensor is responsible for monitoring the position of the throttle pedal and sending this information to the engine control module (ECM) to adjust the throttle accordingly. When this circuit malfunctions, it can lead to a variety of issues that can affect the vehicle's performance and drivability.

OBDII Code P2120 2007 Toyota Highlander - Throttle Pedal Position Sensor/Switch 'D' Circuit
P2120 2007 Toyota Highlander Code - Throttle Pedal Position Sensor/Switch 'D' Circuit

Common Causes of P2120 2007 Toyota Highlander

  1. Faulty throttle pedal position sensor
  2. Wiring issues or shorts in the circuit
  3. Corrosion or poor connections in the sensor circuit
  4. ECM software or hardware issues
  5. Mechanical problems with the throttle pedal assembly

Symptoms of P2120 2007 Toyota Highlander

  1. Check Engine Light illuminated on the dashboard
  2. Reduced engine power
  3. Limited acceleration
  4. Limp mode activation
  5. Difficulty starting the vehicle

How to Fix P2120 2007 Toyota Highlander

  1. Diagnose the issue by using a scan tool to retrieve the trouble code and inspecting the throttle pedal position sensor and its circuit.
  2. Check for any wiring issues, shorts, or corrosion in the sensor circuit and repair or replace as necessary.
  3. Test the throttle pedal position sensor for proper operation and replace if faulty.
  4. Clear the trouble code from the ECM memory and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to identify any underlying issues with the ECM or throttle pedal assembly.

Cost to Fix P2120 2007 Toyota Highlander

The typical repair costs for addressing the P2120 code on a 2007 Toyota Highlander can range from $200 to $500, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships, while independent shops may charge less. It's recommended to check local rates for a more accurate estimate.

Need more information about the P2120 2007 Toyota Highlander code?

Need more information on how to fix the P2120 2007 Toyota Highlander code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2120 2007 Toyota Highlander 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 P2120 2007 Toyota Highlander Code

1. What are common symptoms of OBDII code P2120 in a 2007 Toyota Highlander?

- Common symptoms include issues with acceleration, reduced engine power, and potentially a non-responsive throttle pedal.

2. What could cause the Throttle Pedal Position Sensor/Switch 'D' Circuit error code (P2120) in a 2007 Toyota Highlander?

- Possible causes include a faulty throttle pedal position sensor, wiring issues in the circuit, or a malfunction in the engine control module.

3. How can I diagnose the Throttle Pedal Position Sensor/Switch 'D' Circuit error code (P2120) in my 2007 Toyota Highlander?

- You can diagnose this issue by conducting a thorough inspection of the throttle pedal sensor, checking the wiring for any damage, and using an OBDII scanner to retrieve the specific error code.

4. Can I continue to drive my 2007 Toyota Highlander with OBDII code P2120 present?

- It is not recommended to drive your vehicle with the P2120 code, as it can lead to unsafe driving conditions and potential damage to the engine or other components.

5. How do I repair the Throttle Pedal Position Sensor/Switch 'D' Circuit error code (P2120) in my 2007 Toyota Highlander?

- Repair typically involves replacing the throttle pedal position sensor, repairing any damaged wiring, or reprogramming the engine control module to resolve the issue.

6. Is it possible to reset the OBDII code P2120 in a 2007 Toyota Highlander without fixing the underlying issue?

- While you can clear the error code using an OBDII scanner, it is crucial to address the root cause of the problem to prevent the code from reoccurring.

7. Are there any DIY tips for troubleshooting OBDII code P2120 in a 2007 Toyota Highlander?

- DIY tips include checking for loose or damaged wiring, ensuring proper sensor connections, and consulting the vehicle's service manual for specific testing procedures.

8. Can extreme weather conditions contribute to the occurrence of OBDII code P2120 in a 2007 Toyota Highlander?

- Yes, extreme temperatures or moisture can impact the performance of electronic components, potentially leading to issues with the throttle pedal position sensor circuit.

9. How long does it typically take to repair the Throttle Pedal Position Sensor/Switch 'D' Circuit error code (P2120) in a 2007 Toyota Highlander?

- Repair time can vary depending on the exact cause of the issue, but it may take a few hours to a full day for diagnosis and replacement of faulty components.

10. Is it necessary to visit a mechanic or dealership for resolving OBDII code P2120 in a 2007 Toyota Highlander?

- While it is recommended to seek professional help for accurate diagnosis and repair, experienced DIY enthusiasts with the proper tools and knowledge may be able to address the issue themselves.

Discuss the causes and fixes for P2120 2007 Toyota Highlander OBDII Code

Submit a New Comment

Code P2120 2007 Toyota Highlander comments

No comments found for this page.