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Engine-Codes – Toyota – P0122 2009 Toyota Camry

P0122 2009 Toyota Camry Code - Throttle Position Sensor/Switch 'A' Circuit Low Input

Quick Answer

The P0122 diagnostic trouble code (DTC) for a 2009 Toyota Camry indicates an issue with the Throttle Position Sensor/Switch 'A' Circuit, specifically a low input signal. Common causes include Faulty throttle position sensor, Wiring or connector issues in the TPS circuit, Corrosion or contamination affecting TPS signal. 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 2009 Toyota Camry indicates Throttle Position Sensor/Switch 'A' Circuit Low Input.
Common causes
Common causes include Faulty throttle position sensor, Wiring or connector issues in the TPS circuit, Corrosion or contamination affecting TPS signal.
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 17, 2024
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Code P0122 2009 Toyota Camry Description

The P0122 diagnostic trouble code (DTC) for a 2009 Toyota Camry indicates an issue with the Throttle Position Sensor/Switch 'A' Circuit, specifically a low input signal. The throttle position sensor (TPS) is a crucial component of the vehicle's electronic fuel injection system, as it monitors the position of the throttle valve and sends this information to the engine control module (ECM). The ECM uses this data to adjust fuel delivery and ignition timing, ensuring optimal engine performance and efficiency.

OBDII Code P0122 2009 Toyota Camry - Throttle Position Sensor/Switch 'A' Circuit Low Input
P0122 2009 Toyota Camry Code - Throttle Position Sensor/Switch 'A' Circuit Low Input

Common Causes of P0122 2009 Toyota Camry

  1. Faulty throttle position sensor.
  2. Wiring or connector issues in the TPS circuit.
  3. Corrosion or contamination affecting TPS signal.
  4. ECM software or hardware problems.
  5. Mechanical issues with the throttle body or accelerator pedal assembly.

Symptoms of P0122 2009 Toyota Camry

  1. Poor acceleration or lack of response when pressing the gas pedal.
  2. Rough idling or stalling when coming to a stop.
  3. Reduced fuel efficiency and increased emissions.
  4. Hesitation or surging during acceleration.
  5. Illumination of the Check Engine Light on the dashboard.

How to Fix P0122 2009 Toyota Camry

  1. Begin by verifying the presence of the P0122 code using an OBD-II scanner.
  2. Inspect the throttle position sensor and its wiring for any visible damage or corrosion.
  3. Test the TPS using a multimeter to check for proper voltage readings.
  4. Replace the throttle position sensor if it fails the voltage test.
  5. Clear the DTC from the ECM memory and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0122 2009 Toyota Camry

The cost of repairing a Throttle Position Sensor/Switch 'A' Circuit Low Input issue on a 2009 Toyota Camry can vary depending on the specific cause of the problem and the cost of parts and labor in your area. Typically, replacing a faulty TPS can range from $100 to $300, with additional costs for diagnostic testing and labor. Overall, you can expect to pay between $150 and $500 for this repair, but it's recommended to obtain quotes from local auto repair shops for a more accurate estimate. Keep in mind that labor rates can vary between $80 and $150 per hour, so it's advisable to inquire about specific rates before proceeding with the repair.

When is the Code Detected?

An excessively low voltage from the Throttle Position Sensor (TPS) is sent to Engine Control Module (ECM).

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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 2009 Toyota Camry Code

1. What are the common symptoms of OBDII code P0122 on a 2009 Toyota Camry?

The common symptoms of code P0122 include poor acceleration, stalling, rough idling, and potential issues with the vehicle's transmission shifting.

2. What can cause the Throttle Position Sensor/Switch 'A' Circuit Low Input code on a 2009 Toyota Camry?

Possible causes of code P0122 on a 2009 Toyota Camry include a faulty throttle position sensor, damaged wiring or connectors in the throttle position sensor circuit, or issues with the car's ECU.

3. How can I diagnose the Throttle Position Sensor/Switch 'A' Circuit Low Input code on my 2009 Toyota Camry?

To diagnose code P0122, you can use an OBDII scanner to retrieve the code and then visually inspect the throttle position sensor and its wiring for any signs of damage or wear.

4. Can I drive my 2009 Toyota Camry with OBDII code P0122?

It is not recommended to drive your Toyota Camry with code P0122 as it can lead to poor performance and potential safety issues. It is best to address the problem promptly.

5. How do I repair OBDII code P0122 on my 2009 Toyota Camry?

Repair options for code P0122 include replacing the throttle position sensor, repairing damaged wiring or connectors, and resetting the ECU to clear the code.

6. Is it possible to reset the OBDII code P0122 on a 2009 Toyota Camry without fixing the issue?

While you can clear the code temporarily by resetting the ECU, it is crucial to address the underlying problem causing code P0122 to prevent further issues.

7. Will a faulty throttle position sensor cause other problems besides code P0122 on a 2009 Toyota Camry?

Yes, a faulty throttle position sensor can cause a range of issues such as poor fuel economy, rough idling, and problems with the transmission shifting on a 2009 Toyota Camry.

8. How much does it typically cost to repair OBDII code P0122 on a 2009 Toyota Camry?

The cost of repairing code P0122 can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Can a DIY enthusiast fix OBDII code P0122 on a 2009 Toyota Camry?

If you have the necessary tools and knowledge, you may be able to replace the throttle position sensor or repair wiring issues yourself. However, it is recommended to consult a professional if you are unsure.

10. How long does it usually take to repair OBDII code P0122 on a 2009 Toyota Camry?

The repair time for code P0122 can vary depending on the extent of the issue and the availability of parts. Typically, it may take anywhere from 1 to 3 hours to complete the repair.

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