AutoCodes – Toyota – P0122 2008 Toyota Camry

P0122 2008 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 2008 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 3,370

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 2008 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 2008 Toyota Camry - Throttle Position Sensor/Switch 'A' Circuit Low Input - AutoCodes.com — P0122 2008 Toyota Camry Code - Throttle Position Sensor/Switch 'A' Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0122 2008 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 2008 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 2008 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 2008 Toyota Camry code?

Need more information on how to fix the P0122 2008 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 2008 Toyota Camry Code

1. What does the OBDII code P0122 for a 2008 Toyota Camry mean?

The code P0122 indicates a Throttle Position Sensor/Switch 'A' Circuit Low Input error in the vehicle's system.

2. What are the common symptoms of a P0122 code in a 2008 Toyota Camry?

Common symptoms include poor engine performance, poor acceleration, stalling, or difficulty starting the vehicle.

3. What are the possible causes of a P0122 code in a 2008 Toyota Camry?

Possible causes include a faulty throttle position sensor, damaged wiring or connectors in the circuit, or issues with the engine control module.

4. How can I diagnose a P0122 code in my 2008 Toyota Camry?

Diagnosis involves using an OBDII scanner to read the code, checking the throttle position sensor for proper voltage readings, and inspecting the wiring for any damage.

5. Can I continue driving my 2008 Toyota Camry with a P0122 code?

It is not recommended to drive the vehicle with a P0122 code as it can lead to further damage and unsafe driving conditions.

6. How do I repair a P0122 code in my 2008 Toyota Camry?

Repairing a P0122 code may involve replacing the throttle position sensor, repairing damaged wiring or connectors, or reprogramming the engine control module.

7. Are there any DIY tips for fixing a P0122 code in a 2008 Toyota Camry?

While some basic troubleshooting like checking connections and wiring can be done at home, it is recommended to seek professional help for accurate diagnosis and repair.

8. How much does it typically cost to fix a P0122 code in a 2008 Toyota Camry?

The cost of fixing a P0122 code 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 P0122 code in a 2008 Toyota Camry affect fuel efficiency?

Yes, a P0122 code can lead to poor fuel efficiency as it affects the proper functioning of the throttle position sensor, which is crucial for engine performance optimization.

10. Is it necessary to reset the OBDII system after fixing a P0122 code in a 2008 Toyota Camry?

Yes, it is recommended to reset the OBDII system after fixing a P0122 code to clear the error code and ensure the issue has been successfully resolved.