AutoCodes – Toyota – P2120 2017 Toyota RAV4

P2120 2017 Toyota RAV4 Code - Throttle Pedal Position Sensor/Switch 'D' 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
P2120 2017 Toyota RAV4 indicates Throttle Pedal Position Sensor/Switch 'D' 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 232
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 18, 2022
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Code P2120 2017 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 P2120 2017 Toyota RAV4 - Throttle Pedal Position Sensor/Switch 'D' Circuit - AutoCodes.com
P2120 2017 Toyota RAV4 Code - Throttle Pedal Position Sensor/Switch 'D' Circuit

What are the Possible Causes of the DTC P2120 2017 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 P2120 2017 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 P2120 2017 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 P2120 2017 Toyota RAV4 code?

Need more information on how to fix the P2120 2017 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the 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 P2120 2017 Toyota RAV4 Code

1. What does OBDII code P2120 on a 2017 Toyota RAV4 indicate?

The code P2120 indicates a problem with the Throttle Pedal Position Sensor/Switch 'D' Circuit.

2. What are the common symptoms of a P2120 trouble code in a Toyota RAV4?

Common symptoms include reduced engine power, hesitation or stalling, and illumination of the Check Engine Light.

3. What are the possible causes of the P2120 code in a 2017 Toyota RAV4?

Possible causes include a faulty throttle position sensor, issues with the throttle pedal position sensor, damaged wiring or connectors, or a problem with the engine control module.

4. How can I diagnose the P2120 code on my Toyota RAV4?

Diagnosis involves using an OBDII scanner to read the code, checking the throttle pedal and throttle position sensor for proper operation, and inspecting the wiring and connectors for any damage.

5. Can I continue to drive my Toyota RAV4 with a P2120 trouble code?

It is not recommended to drive the vehicle with a P2120 code as it may lead to unsafe driving conditions and potential damage to the engine.

6. How can I repair the Throttle Pedal Position Sensor/Switch 'D' Circuit issue in my Toyota RAV4?

Repair options include replacing the faulty throttle position sensor, repairing or replacing damaged wiring or connectors, and resetting the engine control module.

7. Will resetting the Check Engine Light resolve the P2120 code in my Toyota RAV4?

Simply resetting the Check Engine Light may temporarily clear the code, but it will not fix the underlying issue causing the P2120 trouble code.

8. How much does it typically cost to repair a P2120 code on a 2017 Toyota RAV4?

The cost of repair can vary depending on the cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Can a DIY enthusiast fix the Throttle Pedal Position Sensor/Switch 'D' Circuit problem in a Toyota RAV4?

While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing the P2120 code may require specialized tools and expertise, so professional help is often recommended.

10. Is the Throttle Pedal Position Sensor/Switch 'D' Circuit problem a common issue in 2017 Toyota RAV4 vehicles?

While it may not be extremely common, issues with the throttle pedal position sensor or circuit can occur in various Toyota models, including the 2017 RAV4.

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