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P2125 2018 Toyota RAV4 Code - Throttle Pedal Position Sensor/Switch 'E' Circuit

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: P2125 2018 Toyota RAV4 indicates Throttle Pedal Position Sensor/Switch 'E' Circuit.
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 227

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

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

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2125 2018 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 P2125 2018 Toyota RAV4 - Throttle Pedal Position Sensor/Switch 'E' Circuit - AutoCodes.com — P2125 2018 Toyota RAV4 Code - Throttle Pedal Position Sensor/Switch 'E' Circuit

What does this mean?

What are the Possible Causes of the DTC P2125 2018 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 P2125 2018 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 P2125 2018 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 P2125 2018 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 P2125 2018 Toyota RAV4 Code

1. What does OBDII code P2125 on a 2018 Toyota RAV4 mean?

- OBDII code P2125 in a 2018 Toyota RAV4 indicates a problem with the Throttle Pedal Position Sensor/Switch 'E' Circuit.

2. What are the common symptoms of a Throttle Pedal Position Sensor/Switch 'E' Circuit issue (P2125) in a 2018 Toyota RAV4?

- Common symptoms of P2125 in a 2018 Toyota RAV4 include reduced engine power, hesitation during acceleration, and the vehicle going into "limp mode."

3. What are the potential causes of OBDII code P2125 in a 2018 Toyota RAV4?

- The potential causes of P2125 in a 2018 Toyota RAV4 include a faulty throttle pedal position sensor/switch, wiring issues, or a problem with the engine control module (ECM).

4. How can I diagnose the Throttle Pedal Position Sensor/Switch 'E' Circuit problem (P2125) in a 2018 Toyota RAV4?

- Diagnosing P2125 in a 2018 Toyota RAV4 involves checking the throttle pedal position sensor's electrical connections, inspecting the wiring for damage, and testing the sensor's functionality using a multimeter.

5. Can I continue driving my 2018 Toyota RAV4 with OBDII code P2125?

- It is not recommended to continue driving a 2018 Toyota RAV4 with code P2125, as it can lead to poor engine performance and potentially unsafe driving conditions.

6. How do I repair OBDII code P2125 in my 2018 Toyota RAV4?

- To repair P2125 in a 2018 Toyota RAV4, you may need to replace the throttle pedal position sensor/switch, repair any damaged wiring, or reprogram the engine control module (ECM) if necessary.

7. Is it possible to reset OBDII code P2125 in a 2018 Toyota RAV4 without fixing the underlying issue?

- While you can clear the code temporarily, it will likely return if the underlying issue causing P2125 in a 2018 Toyota RAV4 is not addressed.

8. How much does it cost to fix OBDII code P2125 on a 2018 Toyota RAV4?

- The cost of fixing P2125 in a 2018 Toyota RAV4 can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from $100 to $500 or more.

9. Are there any preventive measures to avoid OBDII code P2125 in a 2018 Toyota RAV4?

- To prevent code P2125 in a 2018 Toyota RAV4, regular maintenance, such as checking and cleaning throttle components, inspecting wiring for damage, and avoiding harsh driving conditions, can help.