AutoCodes – Toyota – P0122 2015 Toyota RAV4

P0122 2015 Toyota RAV4 Code - Throttle / Pedal Position Sensor / Switch 'A' Circuit Low 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: P0122 2015 Toyota RAV4 indicates Throttle / Pedal Position Sensor / Switch 'A' Circuit Low 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 1,331

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 P0122 2015 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 P0122 2015 Toyota RAV4 - Throttle / Pedal Position Sensor / Switch 'A' Circuit Low Input - AutoCodes.com — P0122 2015 Toyota RAV4 Code - Throttle / Pedal Position Sensor / Switch 'A' Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0122 2015 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 P0122 2015 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 P0122 2015 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 P0122 2015 Toyota RAV4 Code

1. What are the common symptoms of OBDII code P0122 in a 2015 Toyota RAV4?

The common symptoms of OBDII code P0122 in a 2015 Toyota RAV4 include reduced engine power, hesitation or stalling when accelerating, and the illuminated Check Engine Light.

2. What does the OBDII code P0122 in a 2015 Toyota RAV4 indicate?

The OBDII code P0122 in a 2015 Toyota RAV4 indicates an issue with the Throttle / Pedal Position Sensor / Switch 'A' Circuit Low Input, meaning the signal voltage from the sensor is lower than expected.

3. What are the possible causes of OBDII code P0122 in a 2015 Toyota RAV4?

Possible causes of OBDII code P0122 in a 2015 Toyota RAV4 include a faulty throttle position sensor, damaged wiring or connectors, a malfunctioning engine control module (ECM), or a problem with the accelerator pedal position sensor.

4. How can I diagnose the cause of OBDII code P0122 in my 2015 Toyota RAV4?

To diagnose the cause of OBDII code P0122 in a 2015 Toyota RAV4, you can use a scan tool to monitor the sensor's voltage readings, visually inspect the sensor and its wiring for damage, and perform a thorough check of the related components for any issues.

5. Can I drive my 2015 Toyota RAV4 with OBDII code P0122?

It is not recommended to drive your 2015 Toyota RAV4 with OBDII code P0122 for an extended period as it can lead to poor engine performance and potential safety hazards. It is advisable to address the issue promptly.

6. How can I repair OBDII code P0122 in my 2015 Toyota RAV4?

To repair OBDII code P0122 in a 2015 Toyota RAV4, you may need to replace the throttle position sensor, repair or replace damaged wiring or connectors, reset the ECM, or address any issues with the accelerator pedal position sensor.

7. Will disconnecting the battery reset OBDII code P0122 in my 2015 Toyota RAV4?

Disconnecting the battery may temporarily clear the OBDII code P0122 in a 2015 Toyota RAV4, but if the underlying issue is not addressed, the code is likely to reappear. It is recommended to diagnose and repair the root cause of the code.

8. What are the long-term effects of ignoring OBDII code P0122 in a 2015 Toyota RAV4?

Ignoring OBDII code P0122 in a 2015 Toyota RAV4 can lead to decreased fuel efficiency, engine performance issues, and potential damage to other components over time. It is essential to address the code promptly to prevent further problems.

9. Can a DIY enthusiast fix OBDII code P0122 in a 2015 Toyota RAV4?

Depending on your skill level and access to tools, a DIY enthusiast may be able to fix OBDII code P0122 in a 2015 Toyota RAV4 by following repair guides and being cautious when handling sensitive components like the throttle position sensor.

10. How much does it cost to repair OBDII code P0122 in a 2015 Toyota RAV4?

The cost to repair OBDII code P0122 in a 2015 Toyota RAV4 can vary depending on the specific cause of the issue, the need for parts replacement, and labor costs. It is advisable to consult a professional mechanic for an accurate estimate.