Engine-CodesToyota – P2123 2017 Toyota RAV4

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

Quick Answer

The P2123 diagnostic trouble code (DTC) for a 2017 Toyota RAV4 refers to the Throttle Pedal Position Sensor/Switch 'D' Circuit Input High. Common causes include Faulty throttle pedal position sensor, Wiring or connector issues in the throttle pedal position sensor circuit, ECM software or hardware malfunction. 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 throttle pedal position sensor, Wiring or connector issues in the throttle pedal position sensor circuit, ECM software or hardware malfunction.
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.
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code P2123 2017 Toyota RAV4 Description

The P2123 diagnostic trouble code (DTC) for a 2017 Toyota RAV4 refers to the Throttle Pedal Position Sensor/Switch 'D' Circuit Input High. This code indicates that there is a high voltage input signal detected in the circuit related to the throttle pedal position sensor or switch 'D'. The throttle pedal position sensor is a crucial component of the vehicle's electronic throttle control system, responsible for communicating the position of the accelerator pedal to the engine control module (ECM). The ECM uses this information to adjust the throttle opening and fuel delivery to achieve the desired engine performance.

OBDII Code P2123 2017 Toyota RAV4 - Throttle Pedal Position Sensor/Switch 'D' Circuit Input High
P2123 2017 Toyota RAV4 Code - Throttle Pedal Position Sensor/Switch 'D' Circuit Input High

Common Causes of P2123 2017 Toyota RAV4

  1. Faulty throttle pedal position sensor
  2. Wiring or connector issues in the throttle pedal position sensor circuit
  3. ECM software or hardware malfunction
  4. Throttle body issues affecting sensor readings
  5. Environmental factors such as moisture or corrosion affecting sensor operation

Symptoms of P2123 2017 Toyota RAV4

  1. Unintended acceleration
  2. Rough idling or stalling
  3. Lack of power or responsiveness
  4. Check Engine Light illuminated
  5. Reduced fuel efficiency

How to Fix P2123 2017 Toyota RAV4

  1. Begin by diagnosing the exact cause of the high voltage input in the throttle pedal position sensor/switch 'D' circuit using a diagnostic scanner.
  2. Inspect the throttle pedal position sensor, wiring, and connectors for any visible damage or corrosion. Replace any damaged components as necessary.
  3. Test the throttle pedal position sensor's resistance and voltage output to ensure it is within the manufacturer's specifications.
  4. Clear the DTC from the ECM memory and perform a test drive to verify that the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to pinpoint the exact cause, such as testing the ECM or throttle body for faults.

Cost to Fix P2123 2017 Toyota RAV4

The typical repair costs for addressing a P2123 code on a 2017 Toyota RAV4 can vary depending on the specific cause of the issue. In general, replacing a faulty throttle pedal position sensor or repairing wiring/connectors may cost between $150 to $300 for parts, with additional labor costs ranging from $100 to $200. Overall, the total repair cost could range from $250 to $500, but it's important to note that prices can vary based on location, shop rates, and the extent of the repairs needed. It's recommended to consult with a qualified mechanic or repair shop for a more accurate estimate based on your specific situation.

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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.

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