AutoCodes – Toyota – P2135 2003 Toyota Highlander

P2135 2003 Toyota Highlander Code - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation

Quick Answer

Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. Common causes include Faulty electric throttle control actuator (TP sensor 1 and 2), Throttle Position Sensor harness is open or shorted, Throttle Position Sensor circuit poor connection. 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 2003 Toyota Highlander indicates Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation.
Common causes
Common causes include Faulty electric throttle control actuator (TP sensor 1 and 2), Throttle Position Sensor harness is open or shorted, Throttle Position Sensor circuit poor connection.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,315
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P2135 2003 Toyota Highlander Description

Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement.

The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the Engine Control Module (ECM). In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.
OBDII Code P2135 2003 Toyota Highlander - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation - AutoCodes.com
P2135 2003 Toyota Highlander Code - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation

What are the Possible Causes of the DTC P2135 2003 Toyota Highlander?

  • Faulty electric throttle control actuator (TP sensor 1 and 2)
  • Throttle Position Sensor harness is open or shorted
  • Throttle Position Sensor circuit poor connection
  • Faulty accelerator pedal position sensor
  • ECM

How to Fix the DTC P2135 2003 Toyota Highlander?

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 P2135 2003 Toyota Highlander 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 P2135 2003 Toyota Highlander code?

Need more information on how to fix the P2135 2003 Toyota Highlander code? Get Access to Factory Service Manuals

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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 2003 Toyota Highlander Code

1. What does OBDII code P2135 for a 2003 Toyota Highlander indicate?

The code P2135 indicates a Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation issue in the vehicle.

2. What are some common symptoms of a P2135 fault in a 2003 Toyota Highlander?

Common symptoms of a P2135 fault may include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into "limp mode."

3. What are some possible causes of the P2135 code in a 2003 Toyota Highlander?

Possible causes of the P2135 code include a faulty throttle position sensor, a faulty pedal position sensor, damaged wiring or connectors, or issues with the electronic throttle control system.

4. How can I diagnose the cause of the P2135 code in my 2003 Toyota Highlander?

Diagnosing the P2135 code may involve using a scan tool to check for related codes, testing the throttle position sensor and pedal position sensor with a multimeter, and inspecting the wiring and connectors for any damage.

5. Can I still drive my 2003 Toyota Highlander with the P2135 code present?

It is not recommended to drive your vehicle with the P2135 code present, as it can lead to unsafe driving conditions and potential further damage to the vehicle.

6. How can I repair a P2135 fault in my 2003 Toyota Highlander?

Repairing a P2135 fault may involve replacing the faulty throttle position sensor, pedal position sensor, or repairing any damaged wiring or connectors related to the throttle control system.

7. Are there any DIY tips for fixing a P2135 fault in a 2003 Toyota Highlander?

While some may attempt to replace the sensors themselves, it is recommended to have a professional diagnose and repair the issue to ensure proper functioning of the throttle control system.

8. How much does it typically cost to fix a P2135 fault in a 2003 Toyota Highlander?

The cost of fixing a P2135 fault can vary depending on the cause of the issue, but it may range from a few hundred to a thousand dollars for parts and labor.

9. Will resetting the OBDII system clear the P2135 code in my 2003 Toyota Highlander?

Resetting the OBDII system may temporarily remove the code, but it is important to address the underlying issue causing the fault to prevent the code from returning.

10. Can a P2135 fault in a 2003 Toyota Highlander cause long-term damage if left unrepaired?

Leaving a P2135 fault unrepaired can potentially cause long-term damage to the engine and other components of the vehicle, so it is important to address the issue promptly.

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