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Engine-Codes – Lexus – P2135 Lexus

P2135 Lexus Code - Throttle / Pedal Position Sensor / Switch 'A' / 'B' Voltage Correlation

Quick Answer

The P2135 diagnostic trouble code (DTC) for Lexus vehicles indicates a problem with the Throttle/Pedal Position Sensor/Switch 'A'/'B' voltage correlation. Common causes include Faulty throttle position sensor, Faulty pedal position sensor, Wiring or connector issues. 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
P2135 Lexus indicates Throttle / Pedal Position Sensor / Switch 'A' / 'B' Voltage Correlation.
Common causes
Common causes include Faulty throttle position sensor, Faulty pedal position sensor, Wiring or connector issues.
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 06, 2024
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Code P2135 Lexus Description

The P2135 diagnostic trouble code (DTC) for Lexus vehicles indicates a problem with the Throttle/Pedal Position Sensor/Switch 'A'/'B' voltage correlation. This code is often triggered when there is a discrepancy between the voltage signals from the throttle position sensor and the pedal position sensor. These sensors play a crucial role in the operation of the electronic throttle control system, which regulates the engine's throttle opening based on driver input. When the voltage correlation between these sensors is off, it can lead to issues with engine performance, fuel efficiency, and overall drivability.

OBDII Code P2135 Lexus - Throttle / Pedal Position Sensor / Switch 'A' / 'B' Voltage Correlation
P2135 Lexus Code - Throttle / Pedal Position Sensor / Switch 'A' / 'B' Voltage Correlation

Common Causes of P2135 Lexus

  1. Faulty throttle position sensor
  2. Faulty pedal position sensor
  3. Wiring or connector issues
  4. Corrosion or poor electrical connections
  5. ECM software malfunction

Symptoms of P2135 Lexus

  1. Reduced engine power
  2. Hesitation or surging during acceleration
  3. Rough idling or stalling
  4. Check Engine Light illuminated
  5. Difficulty maintaining speed

How to Fix P2135 Lexus

  1. Diagnose the issue using a scan tool to confirm the P2135 code and check the voltage signals from the sensors.
  2. Inspect the throttle position sensor and pedal position sensor for any signs of wear, damage, or malfunction.
  3. Check the wiring and connectors for any corrosion, breaks, or loose connections.
  4. Replace the faulty sensor(s) or repair any wiring issues as needed.
  5. Clear the DTC and test drive the vehicle to ensure the problem has been resolved.

Cost to Fix P2135 Lexus

The typical repair costs for addressing a P2135 code can range from $200 to $500, including parts and labor. However, specific costs may vary depending on the make and model of the vehicle, the location of the repair shop, and the extent of the issue. It is advisable to consult with a professional mechanic or auto repair shop for a more accurate estimate based on the specific circumstances.

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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 P2135 Lexus Code

1. What does OBDII code P2135 for a Lexus indicate?

The OBDII code P2135 for a Lexus indicates an issue with the Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation.

2. What are common symptoms of OBDII code P2135 in a Lexus?

Common symptoms of OBDII code P2135 in a Lexus include reduced engine power, hesitation or stalling, and the vehicle going into limp mode.

3. What are possible causes of OBDII code P2135 in a Lexus?

Possible causes of OBDII code P2135 in a Lexus include a faulty throttle position sensor, accelerator pedal position sensor, wiring issues, or a problem with the electronic throttle control system.

4. How can I diagnose the cause of OBDII code P2135 in my Lexus?

To diagnose the cause of OBDII code P2135 in your Lexus, you can use a scan tool to check for any additional trouble codes, visually inspect the throttle and pedal position sensors for damage or loose connections, and perform a voltage test on the sensors.

5. Can I drive my Lexus with OBDII code P2135?

It is not recommended to drive your Lexus with OBDII code P2135, as it can lead to unsafe driving conditions due to potential loss of power or control. It is best to address the issue promptly.

6. How can I repair OBDII code P2135 in my Lexus?

To repair OBDII code P2135 in your Lexus, you may need to replace the faulty throttle position sensor or accelerator pedal position sensor, repair any damaged wiring, or reset the electronic throttle control system.

7. Can a DIY enthusiast fix OBDII code P2135 in a Lexus?

While some DIY enthusiasts may be able to diagnose and repair OBDII code P2135 in a Lexus, it is recommended to seek professional help if you are not experienced with automotive electrical systems.

8. What is the cost of repairing OBDII code P2135 in a Lexus at a dealership?

The cost of repairing OBDII code P2135 in a Lexus at a dealership can vary depending on the specific issue and the labor rates in your area. It is advisable to get a quote from the dealership before proceeding with the repairs.

9. Are there any preventive measures to avoid OBDII code P2135 in a Lexus?

To prevent OBDII code P2135 in a Lexus, you can perform regular maintenance on your vehicle, including checking and cleaning the throttle and pedal position sensors, and addressing any issues promptly to avoid further damage.

10. Can OBDII code P2135 in a Lexus cause long-term damage if left untreated?

If left untreated, OBDII code P2135 in a Lexus can potentially cause long-term damage to the engine and other components due to inconsistent throttle response and improper fuel delivery. It is important to address the issue promptly to avoid further complications.

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