AutoCodes – Toyota – P2123 2016 Toyota RAV4

P2123 2016 Toyota RAV4 Code - Throttle Pedal Position Sensor/Switch 'D' Circuit Input High

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
P2123 2016 Toyota RAV4 indicates Throttle Pedal Position Sensor/Switch 'D' Circuit Input High.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 305
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 17, 2022
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code P2123 2016 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 P2123 2016 Toyota RAV4 - Throttle Pedal Position Sensor/Switch 'D' Circuit Input High - AutoCodes.com
P2123 2016 Toyota RAV4 Code - Throttle Pedal Position Sensor/Switch 'D' Circuit Input High

What are the Possible Causes of the DTC P2123 2016 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 P2123 2016 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 P2123 2016 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 P2123 2016 Toyota RAV4 code?

Need more information on how to fix the P2123 2016 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2123 2016 Toyota RAV4 code diagnosed by a professional: Find a repair shop in your area

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 P2123 2016 Toyota RAV4 Code

1. What are the common symptoms of OBDII code P2123 in a 2016 Toyota RAV4?

- Common symptoms of P2123 may include a check engine light, reduced engine power, and potential issues with acceleration response.

2. What does the Throttle Pedal Position Sensor/Switch 'D' Circuit Input High mean in relation to code P2123 on a 2016 Toyota RAV4?

- This code indicates that the signal from the throttle pedal position sensor or switch 'D' is higher than the expected range.

3. What are the possible causes of OBDII code P2123 in a 2016 Toyota RAV4?

- Potential causes of P2123 include a faulty throttle pedal position sensor, wiring issues, a defective throttle body, or issues with the engine control module.

4. How can I diagnose the Throttle Pedal Position Sensor/Switch 'D' Circuit Input High code in a 2016 Toyota RAV4?

- Diagnosing P2123 may involve using an OBDII scanner to read the code, checking the throttle pedal sensor's voltage, inspecting wiring for damage, and testing the throttle body.

5. Is it safe to drive my 2016 Toyota RAV4 with OBDII code P2123 active?

- It is generally not recommended to drive with P2123 since it can affect your vehicle's performance and may lead to further issues if left unresolved.

6. Can I repair OBDII code P2123 in my 2016 Toyota RAV4 myself?

- Depending on your experience and tools, you may be able to address P2123 yourself by replacing the throttle pedal position sensor or fixing wiring issues. However, professional help is advisable for accurate diagnosis and repair.

7. How much does it cost to fix OBDII code P2123 in a 2016 Toyota RAV4?

- The cost of fixing P2123 can vary based on the root cause, parts needed, and labor rates. It's recommended to obtain quotes from reputable mechanics or service centers.

8. Will resetting the OBDII code P2123 in a 2016 Toyota RAV4 make it go away permanently?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue causing P2123 is not addressed, the code is likely to reappear.

9. Can a dirty throttle body cause OBDII code P2123 in a 2016 Toyota RAV4?

- While a dirty throttle body can impact performance, P2123 is usually related to the throttle pedal position sensor or switch 'D' circuit input rather than the throttle body itself.

10. How long does it typically take to repair OBDII code P2123 in a 2016 Toyota RAV4?

- The repair time for P2123 can vary depending on the exact cause and complexity of the issue. It could range from a quick sensor replacement to a more involved wiring repair, potentially taking a few hours to complete.

Discuss the causes and fixes for P2123 2016 Toyota RAV4 OBDII Code

Code P2123 2016 Toyota RAV4 comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play