AutoCodes – Toyota – P2123 2017 Toyota RAV4

P2123 2017 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 2017 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.

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Code Popularity 232

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 P2123 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 P2123 2017 Toyota RAV4 - Throttle Pedal Position Sensor/Switch 'D' Circuit Input High - AutoCodes.com — P2123 2017 Toyota RAV4 Code - Throttle Pedal Position Sensor/Switch 'D' Circuit Input High

What does this mean?

What are the Possible Causes of the DTC P2123 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 P2123 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 P2123 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 P2123 2017 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 P2123 2017 Toyota RAV4 Code

1. What are the common symptoms of OBDII code P2123 in a 2017 Toyota RAV4?

The common symptoms of OBDII code P2123 in a 2017 Toyota RAV4 include decreased engine performance, unresponsive throttle, and potential stalling.

2. What does the Throttle Pedal Position Sensor/Switch 'D' Circuit Input High mean for a 2017 Toyota RAV4?

The code P2123 indicates that the Engine Control Module (ECM) has detected a high voltage input signal from the throttle pedal position sensor or switch 'D' circuit in the 2017 Toyota RAV4.

3. What are the possible causes of OBDII code P2123 in a 2017 Toyota RAV4?

Possible causes of code P2123 in a 2017 Toyota RAV4 include a faulty throttle pedal position sensor, damaged wiring or connectors in the sensor circuit, or an ECM issue.

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

Diagnosing code P2123 involves checking the throttle pedal position sensor's wiring and connectors for damage, testing the sensor's voltage output, and verifying proper sensor functionality.

5. Can I continue driving my 2017 Toyota RAV4 with OBDII code P2123?

It is not recommended to continue driving your 2017 Toyota RAV4 with code P2123, as it can lead to further engine performance issues and potential safety concerns.

6. How can I repair OBDII code P2123 in my 2017 Toyota RAV4?

Repairing code P2123 in a 2017 Toyota RAV4 may involve replacing the throttle pedal position sensor, repairing damaged wiring or connectors, or resetting the ECM after addressing the issue.

7. Is it possible to reset OBDII code P2123 in a 2017 Toyota RAV4 without repairs?

While clearing the code may temporarily remove the warning light, it is crucial to address the underlying issue causing code P2123 in a 2017 Toyota RAV4 to prevent further problems.

8. Will OBDII code P2123 cause my 2017 Toyota RAV4 to fail an emissions test?

Yes, code P2123 can cause your 2017 Toyota RAV4 to fail an emissions test due to its impact on engine performance and emissions control systems.

9. Can extreme weather conditions trigger OBDII code P2123 in a 2017 Toyota RAV4?

Extreme weather conditions such as extreme heat or cold can potentially affect the throttle pedal position sensor and trigger code P2123 in a 2017 Toyota RAV4.

10. How much can I expect to pay for repairing OBDII code P2123 in a 2017 Toyota RAV4?

The cost of repairing code P2123 in a 2017 Toyota RAV4 can vary depending on the exact cause of the issue, but it may involve expenses for parts, labor, and diagnostic services.