P0120 2005 Toyota Highlander Code - Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction
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 2005 Toyota Highlander 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.
Code P0120 2005 Toyota Highlander 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 2005 Toyota Highlander?
- Faulty Throttle Position Sensor
- Throttle Position Sensor circuit is open or shorted
- Throttle Position Sensor poor electrical connection
How to Fix the DTC P0120 2005 Toyota Highlander?
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 2005 Toyota Highlander 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 2005 Toyota Highlander code?
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Frequently Asked Questions about P0120 2005 Toyota Highlander Code
1. What does OBDII code P0120 mean for a 2005 Toyota Highlander?
The code P0120 indicates a Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction in the 2005 Toyota Highlander.
2. What are the common symptoms of OBDII code P0120 in a 2005 Toyota Highlander?
Common symptoms include issues with acceleration, poor engine performance, stalling, and the vehicle going into "limp mode."
3. What are the possible causes of OBDII code P0120 in a 2005 Toyota Highlander?
Possible causes include a faulty throttle position sensor, wiring issues, a defective accelerator pedal position sensor, or a problem with the engine control module.
4. How can I diagnose the source of OBDII code P0120 in my 2005 Toyota Highlander?
Diagnosing the issue involves checking the throttle position sensor and accelerator pedal position sensor for proper operation, inspecting the wiring for damage, and using a scan tool to read live data from the engine control module.
5. Can I drive my 2005 Toyota Highlander with OBDII code P0120?
It is not recommended to drive the vehicle with code P0120 as it can lead to unsafe driving conditions and potential damage to the engine over time.
6. How can I repair OBDII code P0120 in my 2005 Toyota Highlander?
Depending on the exact cause, repairs may involve replacing the throttle position sensor, repairing damaged wiring, replacing the accelerator pedal position sensor, or reprogramming the engine control module.
7. Can a DIY enthusiast fix OBDII code P0120 in a 2005 Toyota Highlander?
While some aspects of diagnosing and repairing this code can be done by a DIY enthusiast, proper knowledge of automotive systems and access to specialized tools may be necessary for a successful repair.
8. Is it necessary to reset the OBDII code P0120 after making repairs to a 2005 Toyota Highlander?
Yes, it is recommended to clear the code after making repairs to ensure that the issue has been resolved. This can be done using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes.
9. Are there any preventive maintenance tips to avoid OBDII code P0120 in a 2005 Toyota Highlander?
Regularly inspecting the throttle position sensor, accelerator pedal position sensor, and related wiring for signs of wear or damage can help prevent code P0120 from occurring.
10. How much does it cost to repair OBDII code P0120 in a 2005 Toyota Highlander?
The cost of repairs for code P0120 can vary depending on the exact cause of the issue, the labor rates in your area, and whether you choose to do the repairs yourself or take the vehicle to a professional mechanic.
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