AutoCodes – Toyota – P0120 2008 Toyota Camry

P0120 2008 Toyota Camry Code - Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction

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 circuit is open or shorted, Throttle Position Sensor 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: P0120 2008 Toyota Camry indicates Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction.
Common causes: Common causes include Faulty Throttle Position Sensor, Throttle Position Sensor circuit is open or shorted, Throttle Position Sensor 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 3,592

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0120 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 P0120 2008 Toyota Camry - Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction - AutoCodes.com — P0120 2008 Toyota Camry Code - Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0120 2008 Toyota Camry?

Faulty Throttle Position Sensor
Throttle Position Sensor circuit is open or shorted
Throttle Position Sensor poor electrical connection
ECM

How to Fix the DTC P0120 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 does this mean?

Code Tech Notes

Very common problem with Toyota models. Before replacing any parts, try cleaning the throttle body and reset the light. If the codes come back, then it will necessary to replaced the throttle position sensor (TPS which is built into the throttle body).

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0120 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 P0120 2008 Toyota Camry code?

Need more information on how to fix the P0120 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 P0120 2008 Toyota Camry Code

1. What is OBDII code P0120 for a 2008 Toyota Camry?

The OBDII code P0120 for a 2008 Toyota Camry indicates a Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction.

2. What are the common symptoms of a P0120 code in a 2008 Toyota Camry?

Common symptoms of a P0120 code in a 2008 Toyota Camry include issues with acceleration, reduced engine power, stalling, and in some cases, the vehicle may go into "limp mode."

3. What are the possible causes of a P0120 code in a 2008 Toyota Camry?

Possible causes of a P0120 code in a 2008 Toyota Camry include a faulty throttle position sensor, damaged wiring or connectors in the throttle pedal position sensor circuit, or a problem with the engine control module (ECM).

4. How can I diagnose a P0120 code in a 2008 Toyota Camry?

Diagnosing a P0120 code in a 2008 Toyota Camry typically involves checking the throttle position sensor's voltage readings, inspecting the wiring and connectors for any damage, and performing a thorough scan of the vehicle's ECM for any related faults.

5. Can I still drive my 2008 Toyota Camry with a P0120 code?

It is not recommended to drive your 2008 Toyota Camry with a P0120 code, as it can lead to poor performance, stalling, or other potential safety hazards. It's best to address the issue promptly.

6. How do I repair a P0120 code in a 2008 Toyota Camry?

Repairing a P0120 code in a 2008 Toyota Camry may involve replacing the throttle position sensor, repairing any damaged wiring or connectors, or resetting the ECM after fixing the underlying issue.

7. Can I reset the P0120 code in my 2008 Toyota Camry without fixing the problem?

Resetting the P0120 code in a 2008 Toyota Camry without addressing the underlying issue may temporarily turn off the check engine light, but the problem will likely resurface. It's essential to fix the root cause of the code.

8. How much does it cost to repair a P0120 code in a 2008 Toyota Camry?

The cost to repair a P0120 code in a 2008 Toyota Camry can vary depending on the specific issue, parts needed, and labor rates. It's recommended to consult with a mechanic for an accurate estimate.

9. Is a P0120 code a serious issue in a 2008 Toyota Camry?

Yes, a P0120 code in a 2008 Toyota Camry should be taken seriously as it can affect the vehicle's performance and drivability. Ignoring the code may lead to further damage or safety concerns.

10. How often does a P0120 code occur in a 2008 Toyota Camry?

The occurrence of a P0120 code in a 2008 Toyota Camry can vary depending on factors like mileage, maintenance, and driving conditions. If the code appears, it should be addressed promptly to prevent further issues.