AutoCodes – Toyota – P0123 2016 Toyota RAV4

P0123 2016 Toyota RAV4 Code - Throttle / Pedal Position Sensor / Switch 'A' Circuit High Input

Quick Answer

The throttle position sensor is mounted on the throttle with motor body assembly and detects the opening angle of the throttle valve. Common causes include Faulty Throttle Position Sensor (built into Throttle Body Assembly), Throttle Position Sensor circuit is open or shorted, Throttle Position Sensor 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: P0123 2016 Toyota RAV4 indicates Throttle / Pedal Position Sensor / Switch 'A' Circuit High Input.
Common causes: Common causes include Faulty Throttle Position Sensor (built into Throttle Body Assembly), Throttle Position Sensor circuit is open or shorted, Throttle Position Sensor 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 529

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 Aug 23, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P0123 2016 Toyota RAV4 Description

The throttle position sensor is mounted on the throttle with motor body assembly and detects the opening angle of the throttle valve. This sensor is a non-contact type sensor. It 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.
As the valve closes, the sensor output voltage decreases and as the valve opens, the sensor output voltage increases. The Engine Control Module (ECM) calculates the throttle valve opening angle according to these signals and controls the throttle actuator in response to driver inputs. These signals are also used in calculations such as air-fuel ratio correction, power increase correction, and fuel-cut control.
The ECM uses the throttle position sensor to monitor the throttle valve opening angle. There are several checks that the ECM performs to confirm the proper operation of the throttle position sensor.
This sensor transmits two signals, if the output voltage difference between the two signals deviates from the normal operating range, the ECM interprets this as a malfunction in the throttle position sensor. The ECM illuminates the MIL and stores the Diagnostic Trouble Code (DTC).

OBDII Code P0123 2016 Toyota RAV4 - Throttle / Pedal Position Sensor / Switch 'A' Circuit High Input - AutoCodes.com — P0123 2016 Toyota RAV4 Code - Throttle / Pedal Position Sensor / Switch 'A' Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0123 2016 Toyota RAV4?

Faulty Throttle Position Sensor (built into Throttle Body Assembly)
Throttle Position Sensor circuit is open or shorted
Throttle Position Sensor poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0123 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 does this mean?

Code Tech Notes

Quite a frequent problem with Toyota models. Before replacing any parts, try cleaning the throttle body and resetting the code. If the code comes back, it will be necessary to replace the Throttle Body Assembly.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0123 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.

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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 P0123 2016 Toyota RAV4 Code

1. What are common symptoms of OBDII code P0123 in a 2016 Toyota RAV4?

- Common symptoms include issues with acceleration, reduced engine power, stalling, and potential problems with the vehicle's overall performance.

2. What does the Throttle / Pedal Position Sensor / Switch 'A' Circuit High Input error code indicate?

- The error code P0123 signifies that the Engine Control Module (ECM) has detected a high voltage input from the throttle or pedal position sensor/switch 'A' circuit.

3. What are the potential causes of the Throttle / Pedal Position Sensor / Switch 'A' Circuit High Input code in a 2016 Toyota RAV4?

- Possible causes include a faulty throttle position sensor, damaged wiring or connectors in the sensor circuit, a malfunctioning ECM, or issues with the accelerator pedal position sensor.

4. How can I diagnose the Throttle / Pedal Position Sensor / Switch 'A' Circuit High Input issue in my 2016 Toyota RAV4?

- You can diagnose the problem using a diagnostic scan tool to retrieve the trouble code, inspect the wiring and connectors for any damage, and test the throttle position sensor's voltage output.

5. Can I continue driving my 2016 Toyota RAV4 with the P0123 error code?

- It is not recommended to drive the vehicle with the P0123 code as it may lead to further damage and potential safety risks. It is advisable to address the issue promptly.

6. Is it possible to reset the OBDII code P0123 in a 2016 Toyota RAV4?

- While you can clear the error code using a diagnostic scan tool, it is essential to address the underlying issue causing the code to prevent it from reoccurring.

7. How much does it typically cost to repair the Throttle / Pedal Position Sensor / Switch 'A' Circuit High Input problem in a 2016 Toyota RAV4?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing the throttle position sensor, repairing wiring, or addressing other related components. Costs can range from $100 to $300 or more.

8. Can a DIY enthusiast fix the P0123 code in a 2016 Toyota RAV4?

- Depending on the individual's skills and access to tools, it may be possible to address some aspects of the issue, such as checking and cleaning sensor connections. However, more complex repairs may require professional assistance.

9. Are there any preventive maintenance tips to avoid the Throttle / Pedal Position Sensor / Switch 'A' Circuit High Input code in a 2016 Toyota RAV4?

- Regularly inspecting and maintaining the throttle position sensor, keeping wiring connections clean and secure, and promptly addressing any unusual symptoms can help prevent the occurrence of this error code.

10. How long does it take to repair the Throttle / Pedal Position Sensor / Switch 'A' Circuit High Input issue in a 2016 Toyota RAV4?

- The repair time can vary based on the exact cause of the problem and the complexity of the repair. It may take anywhere from 1 to 3 hours for a professional technician to diagnose and fix the issue.