AutoCodes – Toyota – P2122 2017 Toyota RAV4

P2122 2017 Toyota RAV4 Code - Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low

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: P2122 2017 Toyota RAV4 indicates Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low.
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 293

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 P2122 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 P2122 2017 Toyota RAV4 - Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low - AutoCodes.com — P2122 2017 Toyota RAV4 Code - Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low

What does this mean?

What are the Possible Causes of the DTC P2122 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 P2122 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 P2122 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 P2122 2017 Toyota RAV4 code?

Need more information on how to fix the P2122 2017 Toyota RAV4 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 P2122 2017 Toyota RAV4 Code

1. What are the common symptoms of OBDII code P2122 in a 2017 Toyota RAV4?

The common symptoms of P2122 include reduced engine power, hesitation during acceleration, and the vehicle going into limp mode.

2. What does the OBDII code P2122 indicate in a 2017 Toyota RAV4?

P2122 indicates an issue with the Throttle Pedal Position Sensor/Switch 'D' Circuit Input being low, signaling a potential problem with the throttle position sensor.

3. What are the possible causes of OBDII code P2122 in a 2017 Toyota RAV4?

Possible causes of P2122 include a faulty throttle position sensor, damaged wiring or connectors in the throttle pedal circuit, or issues with the engine control module.

4. How can I diagnose the Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low issue in my 2017 Toyota RAV4?

Diagnose P2122 by checking the throttle position sensor's wiring and connectors for damage, testing the sensor's voltage output, and scanning for any related trouble codes.

5. Can I continue driving my 2017 Toyota RAV4 with OBDII code P2122?

It is not recommended to continue driving with P2122 as it can lead to performance issues and potentially unsafe driving conditions. Seek professional help to diagnose and repair the problem.

6. How can I repair OBDII code P2122 in my 2017 Toyota RAV4?

To repair P2122, you may need to replace the throttle position sensor, repair any damaged wiring or connectors, or reprogram the engine control module to address the circuit input low issue.

7. Will resetting the OBDII code P2122 in my 2017 Toyota RAV4 fix the problem?

Simply resetting the code may temporarily clear the error, but if the underlying issue causing P2122 is not addressed, the code is likely to reappear. It's essential to diagnose and fix the root cause.

8. Is it possible to prevent OBDII code P2122 from occurring in my 2017 Toyota RAV4?

Regular maintenance, such as checking the throttle system components, keeping the wiring in good condition, and addressing any warning signs promptly, can help prevent P2122 from occurring.

9. How much does it cost to repair OBDII code P2122 in a 2017 Toyota RAV4?

The cost to repair P2122 can vary depending on the specific cause, parts needed, and labor rates. It's advisable to get a diagnosis from a professional technician for an accurate estimate.

10. Can a DIY enthusiast fix OBDII code P2122 in a 2017 Toyota RAV4?

While some individuals with automotive repair experience might be able to address P2122 themselves, it's recommended to consult a professional mechanic for proper diagnosis and repair to ensure safety and effectiveness.