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Engine-Codes – Toyota – P2138 2006 Toyota Camry

P2138 2006 Toyota Camry Code - Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation

Quick Answer

The P2138 diagnostic trouble code for a 2006 Toyota Camry indicates a problem with the Throttle Pedal Position Sensor/Switch 'D'/'E' voltage correlation. Common causes include A faulty throttle pedal position sensor, Damaged wiring or connectors in the throttle system, Malfunctioning throttle position actuator. 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
P2138 2006 Toyota Camry indicates Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation.
Common causes
Common causes include A faulty throttle pedal position sensor, Damaged wiring or connectors in the throttle system, Malfunctioning throttle position actuator.
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 08, 2024
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Code P2138 2006 Toyota Camry Description

The P2138 diagnostic trouble code for a 2006 Toyota Camry indicates a problem with the Throttle Pedal Position Sensor/Switch 'D'/'E' voltage correlation. This code is triggered when the voltage signals from the throttle position sensor (TPS) and the throttle position actuator do not correlate with each other, indicating a potential issue with the throttle system. The throttle pedal position sensor is responsible for monitoring the position of the throttle pedal and sending this information to the engine control module (ECM). The ECM uses this data to determine the appropriate fuel delivery and air intake for optimal engine performance.

OBDII Code P2138 2006 Toyota Camry - Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
P2138 2006 Toyota Camry Code - Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation

Common Causes of P2138 2006 Toyota Camry

  1. A faulty throttle pedal position sensor.
  2. Damaged wiring or connectors in the throttle system.
  3. Malfunctioning throttle position actuator.
  4. Issues with the ECM programming or communication.

Symptoms of P2138 2006 Toyota Camry

  1. Hesitation or lack of response when pressing the accelerator pedal.
  2. Rough idling or fluctuating engine speed.
  3. Stalling or difficulty starting the vehicle.
  4. Reduced engine power or acceleration.
  5. Illumination of the check engine light on the dashboard.

How to Fix P2138 2006 Toyota Camry

  1. Begin by conducting a thorough inspection of the throttle pedal position sensor, throttle position actuator, and related wiring and connectors.
  2. Test the voltage signals from the throttle pedal position sensor and throttle position actuator to determine if they are within the specified range.
  3. Replace any faulty components, such as the throttle pedal position sensor or throttle position actuator, if necessary.
  4. Clear the diagnostic trouble codes from the ECM and perform a test drive to ensure that the issue has been resolved.
  5. If the problem persists, consult a professional mechanic or dealership for further diagnostics and repairs.

Cost to Fix P2138 2006 Toyota Camry

The typical repair costs for addressing the P2138 code on a 2006 Toyota Camry can vary depending on the specific components that need to be replaced and the labor rates in your area. On average, the cost of parts for a throttle pedal position sensor or throttle position actuator replacement can range from $100 to $300. Labor costs may add an additional $100 to $200, with total repair costs typically falling between $200 and $500. It is advisable to check with local auto repair shops or dealerships for more accurate estimates based on your location and vehicle specifications. Keep in mind that diagnostic time and labor rates can vary, so it is essential to inquire about these factors when obtaining a repair quote.

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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 P2138 2006 Toyota Camry Code

1. What does OBDII code P2138 mean for a 2006 Toyota Camry?

P2138 indicates a voltage correlation issue between the Throttle Pedal Position Sensor/Switch 'D' and 'E', which monitor the throttle pedal's position.

2. What are the symptoms of code P2138 in a Toyota Camry?

Symptoms can include reduced engine performance, throttle hesitation, limited acceleration, the vehicle entering "limp mode," or an illuminated check engine light.

3. What causes the P2138 code to appear?

Common causes include a faulty throttle pedal position sensor, damaged or corroded wiring/connectors, or issues with the engine control module (ECM).

4. Can I drive my 2006 Toyota Camry with code P2138?

While the car may still be drivable, it could experience reduced performance or enter limp mode. Driving for extended periods without addressing the issue is not recommended.

5. How do I diagnose the P2138 code in my 2006 Camry?

Diagnosis involves using an OBDII scanner to confirm the code, inspecting the throttle pedal position sensor, and checking for damaged wiring or poor electrical connections.

6. How do I fix a P2138 code on a Toyota Camry?

Repairs may include replacing the throttle pedal position sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or, in rare cases, reprogramming or replacing the ECM.

7. How much does it cost to repair a P2138 code?

Repair costs depend on the issue but typically range from $100 to $500, with throttle pedal sensor replacement being the most common fix.

8. Can a bad battery trigger the P2138 code?

A weak or failing battery can cause voltage irregularities, potentially contributing to the P2138 code, though it is less common.

9. Will resetting the ECU clear the P2138 code?

Resetting the ECU may temporarily clear the code, but if the underlying issue isn’t resolved, the code will likely return.

10. How can I prevent the P2138 code from occurring?

Regular maintenance, including inspecting the throttle pedal sensor and its wiring for damage or corrosion, can help prevent this code from appearing.

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