AutoCodes – Toyota – P0122 2009 Toyota Camry

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

Quick Answer

The TP sensor is mounted on the throttle body, and detects the opening angle of the throttle valve. Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor circuit 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 2009 Toyota Camry indicates Throttle Position Sensor/Switch 'A' Circuit Low Input.
Common causes: Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor circuit 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 4,192

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 Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0122 2009 Toyota Camry Description

The TP sensor is mounted on the throttle body, and detects the opening angle of the throttle valve. This sensor is a non-contact type. 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. The TP sensor has two sensor circuits which each transmits a signal, VTA1 and VTA2. VTA1 is used to detect the throttle valve angle and VTA2 is used to detect malfunctions in VTA1. The sensor signal voltages vary between 0 V and 5 V in proportion to the throttle valve opening angle, and are transmitted to the VTA terminals of the ECM.
As the valve closes, the sensor output voltage decreases and as the valve opens, the sensor output voltage increases. The 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.

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

What does this mean?

What are the Possible Causes of the DTC P0122 2009 Toyota Camry?

Faulty throttle position sensor
Throttle position sensor harness is open or shorted
Throttle position sensor circuit poor electrical connection
ECM

How to Fix the DTC P0122 2009 Toyota Camry?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0122 2009 Toyota Camry 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.

Need more information about the P0122 2009 Toyota Camry code?

Need more information on how to fix the P0122 2009 Toyota Camry code? Get Access to Factory Service Manuals

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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.