P0120 2006 Toyota Corolla Code - Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction 3ZZ-FE Engine
Quick Answer
The throttle position sensor (TPS) responds to the accelerator pedal movement. 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 2006 Toyota Corolla indicates Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction 3ZZ-FE Engine.
- 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.
Code P0120 2006 Toyota Corolla Description
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.
What are the Possible Causes of the DTC P0120 2006 Toyota Corolla?
- Faulty Throttle Position Sensor
- Throttle Position Sensor circuit is open or shorted
- Throttle Position Sensor poor electrical connection
How to Fix the DTC P0120 2006 Toyota Corolla?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0120 2006 Toyota Corolla 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.
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Frequently Asked Questions about P0120 2006 Toyota Corolla Code
1. What are the common symptoms of OBDII code P0120 on a 2006 Toyota Corolla with the 3ZZ-FE engine?
The common symptoms of P0120 include issues with acceleration, decreased engine power, stalling, and in some cases, the vehicle may go into limp mode.
2. What are the possible causes of the Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction code on a 2006 Toyota Corolla?
The possible causes of P0120 on a 2006 Toyota Corolla can include a faulty throttle position sensor, damaged wiring or connectors in the throttle position sensor circuit, or a problem with the engine control module (ECM).
3. How can I diagnose the cause of OBDII code P0120 on my 2006 Toyota Corolla?
To diagnose P0120, you can use a scan tool to check for the specific trouble code. Then, you can inspect the throttle position sensor and its wiring for any visible damage. Testing the sensor's voltage and resistance can also help pinpoint the issue.
4. Can I still drive my 2006 Toyota Corolla with OBDII code P0120?
It is not recommended to drive your vehicle with code P0120 as it can lead to unsafe driving conditions and potential further damage to the engine. It's best to address the issue promptly.
5. How can I repair OBDII code P0120 on my 2006 Toyota Corolla?
Repairing P0120 may involve replacing the throttle position sensor, repairing or replacing damaged wiring or connectors, or reprogramming the ECM. It's advisable to consult a professional mechanic for a proper diagnosis and repair.
6. Is it possible to reset the OBDII code P0120 on a 2006 Toyota Corolla without fixing the underlying issue?
Resetting the code without addressing the underlying problem will only temporarily turn off the check engine light. The issue causing the code will persist, and the code is likely to return.
7. Will a faulty throttle pedal position sensor affect the fuel economy of my 2006 Toyota Corolla?
Yes, a faulty throttle pedal position sensor can impact the fuel economy of your vehicle as it may cause issues with fuel delivery and engine performance, leading to decreased efficiency.
8. Can extreme weather conditions cause OBDII code P0120 to trigger on a 2006 Toyota Corolla?
Extreme weather conditions, such as extreme heat or cold, can potentially affect the performance of sensors and wiring in the throttle position sensor circuit, leading to the triggering of code P0120.
9. How much does it typically cost to repair OBDII code P0120 on a 2006 Toyota Corolla at a mechanic?
The cost of repairing P0120 can vary depending on the specific cause of the issue, the labor rates of the mechanic, and the cost of parts. It's best to get a diagnostic from a mechanic for an accurate estimate.
10. Can a DIY enthusiast with basic automotive skills repair OBDII code P0120 on a 2006 Toyota Corolla?
While some basic repairs like sensor replacement or checking wiring can be done by a DIY enthusiast, diagnosing and repairing more complex issues related to P0120 may require specialized tools and expertise, so it's recommended to consult a professional mechanic.
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