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

Quick Answer

The P0122 diagnostic trouble code (DTC) for a 2015 Toyota RAV4 refers to the Throttle/Pedal Position Sensor/Switch 'A' Circuit Low Input. Common causes include Faulty throttle or pedal position sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning ECM/PCM. 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 or pedal position sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning ECM/PCM.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0122 2015 Toyota RAV4 Description

The P0122 diagnostic trouble code (DTC) for a 2015 Toyota RAV4 refers to the Throttle/Pedal Position Sensor/Switch 'A' Circuit Low Input. This code is indicating that there is an issue with the electrical circuit associated with the throttle or pedal position sensor, specifically that the input signal is lower than what is expected by the Engine Control Module (ECM) or Powertrain Control Module (PCM).

OBDII Code P0122 2015 Toyota RAV4 - Throttle / Pedal Position Sensor / Switch 'A' Circuit Low Input
P0122 2015 Toyota RAV4 Code - Throttle / Pedal Position Sensor / Switch 'A' Circuit Low Input

Common Causes of P0122 2015 Toyota RAV4

  1. Faulty throttle or pedal position sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Malfunctioning ECM/PCM
  4. Mechanical issue with the throttle body
  5. Corrosion or contamination in the sensor connections

Symptoms of P0122 2015 Toyota RAV4

  1. Rough idling or stalling when at a stop
  2. Lack of responsiveness when accelerating
  3. Fluctuating engine RPMs
  4. Illumination of the Check Engine Light
  5. Reduced fuel efficiency

How to Fix P0122 2015 Toyota RAV4

  1. Begin by performing a thorough inspection of the throttle and pedal position sensor, checking for any visible damage or wear.
  2. Use a multimeter to test the sensor's electrical signal and compare it to manufacturer specifications.
  3. Inspect the wiring and connectors associated with the sensor for any signs of damage or corrosion, repairing or replacing as necessary.
  4. If the sensor and wiring are in good condition, consider testing the ECM/PCM for any faults or errors that may be causing the low input signal.
  5. Reset the ECM/PCM and clear the DTC to see if the issue persists, ensuring proper sensor calibration and functionality.

Cost to Fix P0122 2015 Toyota RAV4

The typical repair costs for addressing a P0122 code on a 2015 Toyota RAV4 can vary depending on the specific cause of the issue. Parts such as a new throttle or pedal position sensor can range from $50 to $200, while labor costs at an auto repair shop can add an additional $100 to $200. Overall, the total repair cost for this issue may fall within the range of $150 to $400.

What does this mean?

Tech Notes for P0122 2015 Toyota RAV4

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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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.

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