AutoCodes – Toyota – P2122 2009 Toyota Camry

P2122 2009 Toyota Camry Code - Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low

Quick Answer

The Accelerator Pedal Position (APP) sensor is mounted on the accelerator pedal to detect the angle of the accelerator pedal. Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position (APP) Sensor harness is open or shorted, Accelerator Pedal Position (APP) 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: P2122 2009 Toyota Camry indicates Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low.
Common causes: Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position (APP) Sensor harness is open or shorted, Accelerator Pedal Position (APP) 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 2,397

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 May 10, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P2122 2009 Toyota Camry Description

The Accelerator Pedal Position (APP) sensor is mounted on the accelerator pedal to detect the angle of the accelerator pedal. This sensor is electronically controlled and uses Hall-effect elements.
In the accelerator pedal position sensor, the voltage applied to terminals VPA and VPA2 of the Engine Control Module (ECM) changes between 0 V and 5 V in proportion to the angle of the accelerator pedal. The VPA is a signal to indicate the actual accelerator pedal angle and is used for the engine control. VPA2 is used to detect malfunctions of the sensor itself.
The ECM monitors the accelerator pedal angle from VPA and VPA2 signal outputs, and controls the throttle motor based on these signals.

OBDII Code P2122 2009 Toyota Camry - Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low - AutoCodes.com — P2122 2009 Toyota Camry Code - Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low

What does this mean?

What are the Possible Causes of the DTC P2122 2009 Toyota Camry?

Faulty Accelerator Pedal Position (APP) Sensor
Accelerator Pedal Position (APP) Sensor harness is open or shorted
Accelerator Pedal Position (APP) Sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2122 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 does this mean?

Code Tech Notes

2007-2010 Toyota Camry apply for the recall for a bad Accelerator Pedal Position (APP) Sensor. You can call Toyota and check to see if your vehicle applies for the recall.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2122 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 P2122 2009 Toyota Camry code?

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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 P2122 2009 Toyota Camry Code

1. What does OBDII code P2122 on a 2009 Toyota Camry mean?

The code P2122 indicates a problem with the Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low.

2. What are the common symptoms of OBDII code P2122 in a 2009 Toyota Camry?

Common symptoms of P2122 may include reduced engine power, hesitation or stalling, and the vehicle going into limp mode.

3. What are the possible causes of OBDII code P2122 in a 2009 Toyota Camry?

Potential causes of P2122 include a faulty throttle pedal position sensor, damaged wiring or connectors, or issues with the throttle body.

4. How can I diagnose the Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low issue in my 2009 Toyota Camry?

Diagnosing P2122 may involve inspecting the throttle pedal sensor, checking for damaged wiring, and using a scan tool to monitor sensor readings.

5. Can I continue driving my 2009 Toyota Camry with OBDII code P2122?

It is not recommended to continue driving with P2122, as it can lead to further damage to the vehicle and potential safety hazards.

6. How can I repair OBDII code P2122 on my 2009 Toyota Camry?

Repairing P2122 may involve replacing the throttle pedal position sensor, repairing damaged wiring, or cleaning and inspecting the throttle body.

7. Will resetting the OBDII code P2122 on my 2009 Toyota Camry make it go away permanently?

Resetting the code may temporarily clear the error, but if the underlying issue causing P2122 is not addressed, the code is likely to reappear.

8. How much does it typically cost to fix OBDII code P2122 on a 2009 Toyota Camry?

The cost of repairing P2122 can vary depending on the specific issue, but it may range from $100 to $300 for parts and labor.

9. Can a DIY enthusiast fix OBDII code P2122 on a 2009 Toyota Camry?

Some aspects of diagnosing and repairing P2122 may be suitable for DIY enthusiasts with the right tools and knowledge, but professional help is recommended for accurate diagnosis and repair.

10. Is it common for the Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low issue to recur in a 2009 Toyota Camry after repair?

If the root cause of P2122 is not properly addressed during repair, there is a possibility that the issue may recur in the future. Regular maintenance and inspections can help prevent this.