AutoCodes – Toyota – P2138 2014 Toyota RAV4

P2138 2014 Toyota RAV4 Code - Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation

Quick Answer

The Accelerator Pedal Position (APP) sensor is built into the accelerator pedal sensor assembly and has 2 sensor circuits: VPA (main) and VPA2 (sub). Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor circuit poor electrical 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: P2138 2014 Toyota RAV4 indicates Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation.
Common causes: Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor circuit poor electrical 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.

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Code Popularity 273

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

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Table of contents Created and updated by William Orellana on Sep 17, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
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Code P2138 2014 Toyota RAV4 Description

The Accelerator Pedal Position (APP) sensor is built into the accelerator pedal sensor assembly and has 2 sensor circuits: VPA (main) and VPA2 (sub). This sensor is a non-contact type sensor and uses Hall-effect elements in order to yield accurate signals even in extreme driving conditions, such as at high speeds as well as very low speeds. The voltage, which is applied to terminals VPA and VPA2 of the Engine Control Module (ECM), varies between 0.5 V and 4.75 V in proportion to the operating angle of the accelerator pedal (throttle valve). A signal from VPA indicates the actual accelerator pedal opening angle (throttle valve opening angle) and is used for engine control. A signal from VPA2 conveys the status of the VPA circuit and is used to check the accelerator pedal position sensor itself.
The ECM monitors the actual accelerator pedal opening angle (throttle valve opening angle) through the signals from VPA and VPA2 and controls the throttle actuator according to these signals.
When either the output voltage of VPA or VPA2 deviates from the standard range, or the difference between the output voltages of the 2 sensor circuits is more than the threshold, the ECM determines that there is a malfunction in the accelerator pedal position sensor. The ECM then illuminates the MIL and stores a Diagnostic Trouble Code (DTC).

OBDII Code P2138 2014 Toyota RAV4 - Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation - AutoCodes.com — P2138 2014 Toyota RAV4 Code - Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation

What does this mean?

What are the Possible Causes of the DTC P2138 2014 Toyota RAV4?

Faulty Accelerator Pedal Position (APP) Sensor
Accelerator Pedal Position Sensor harness is open or shorted
Accelerator Pedal Position Sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2138 2014 Toyota RAV4?

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 P2138 2014 Toyota RAV4 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 P2138 2014 Toyota RAV4 code?

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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 2014 Toyota RAV4 Code

1. What are the common symptoms of OBDII code P2138 in a 2014 Toyota RAV4?

- Common symptoms include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into limp mode.

2. What does the OBDII code P2138 in a 2014 Toyota RAV4 indicate?

- This code indicates an issue with the Throttle Pedal Position Sensor/Switch 'D'/'E' voltage correlation.

3. What are the possible causes of OBDII code P2138 in a 2014 Toyota RAV4?

- Possible causes include a faulty throttle position sensor, wiring issues, a defective accelerator pedal position sensor, or a problem with the electronic throttle control system.

4. How can I diagnose the cause of OBDII code P2138 in my 2014 Toyota RAV4?

- Diagnosing this code typically involves checking the throttle position sensor readings, inspecting the wiring for any damage, and testing the accelerator pedal position sensor.

5. Is it safe to drive my 2014 Toyota RAV4 with OBDII code P2138?

- It is not recommended to drive the vehicle with this code as it can lead to unsafe driving conditions due to potential power loss and acceleration issues.

6. Can I reset the OBDII code P2138 in my 2014 Toyota RAV4 by disconnecting the battery?

- While disconnecting the battery may temporarily clear the code, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

7. How much does it typically cost to repair OBDII code P2138 in a 2014 Toyota RAV4?

- Repair costs can vary depending on the exact cause of the code, but it may range from $200 to $500 or more, including parts and labor.

8. Can I fix OBDII code P2138 in my 2014 Toyota RAV4 myself?

- If you have the necessary tools and experience working on automotive electronics, you may be able to fix this issue yourself. However, it is advisable to consult a professional if you are unsure.

9. Will OBDII code P2138 cause damage to other components if not repaired promptly?

- Ignoring this code can potentially cause damage to other components in the electronic throttle control system and affect the overall performance of the vehicle.

10. How long does it take to repair OBDII code P2138 in a 2014 Toyota RAV4?

- The repair time can vary depending on the exact cause of the code and the availability of parts, but it typically takes a few hours to a day for a professional technician to diagnose and fix the issue.