How To Reset The Throttle Position Sensor In A Toyota?

If you start experiencing engine issues in your Toyota, identifying the problem can be difficult. An engine compartment has several different parts. If any of them fails, it means deteriorated performance. For example, if you experience that your engine is not accelerating properly or there are idling issues, a failed throttle position sensor may be the cause.

It is a small but significant part of a car’s fuel management system. And if it fails, you must learn how to rest the throttle position sensor in a Toyota.

What Is A TPS or Throttle Position Sensor?

It is a small part of the fuel management system that sits on the top of the butterfly valve. It continuously monitors the air and fuel flow to the engine. It reports that whether the air and fuel mixture is optimum or not. It sends the signals, and the system accordingly releases the fuel and air. If this sensor fails, the throttle body will malfunction. It causes idling issues and acceleration problems. It also affects your car’s mileage.

With the changing technologies, more advanced TPS sensors are used in cars today. These are complex systems that you can’t fix at home. They need complete replacement. But they offer improved performance and better fuel economy.

Symptoms Of A Failed Throttle Position Sensor

Before wondering how to reset the throttle position sensor in a Toyota, you must ensure that TPS is the culprit. The signs that indicate a failed sensor are:

  • Improper acceleration
  • Rough idling
  • Hesitation and surging during acceleration
  • Issues in gear shifting
  • Poor power

If your car has started stalling, check the rev gauge or listen to your Toyota’s engine with the ignition on. If you hear anything unusual, you know who the culprit is.

If your fuel consumption suddenly increases, it can be caused by a faulty TPS as the system overflows the engine with extra fuel without correct information from the sensor.

The gas pedal stops working properly as TPS fails, and your smooth ride turns into frequent dips and surges.

 If your engine makes unintelligible sounds and the rev gauge fluctuates rapidly, it indicates a problem with TPS.

If your CEL starts blinking for no reason, it indicates a problem in the engine. However, it does not exclusively indicate a failed TPS but any problem in the engine.

These signs are not exclusively connected to a failed throttle position sensor, but check it, if you experience any of the above issues.

How To Reset The TPS In A Toyota?

Whether you are driving an Avalon, a Camry, a Tacoma, Sienna, or another Toyota car, these methods of resetting the TPS will work.

Once you have identified a bad TPS as the cause of inefficient performance, follow any of these steps to reset the TPS and recalibrate the throttle position sensor. Time is extremely crucial here. Keep a watch or stopwatch ready with you.

First Method

It is a very simple method and does not require any expertise.

  • Release the accelerator completely.
  • Turn on the ignition and wait for 2 seconds.
  • Turn off the ignition and wait for 10 seconds.
  • Turn on the ignition and wait for 2 seconds again.
  • Turn off the ignition and wait for 10 seconds again.

It completes the first reset process.

Second Method

It is simple and used to ensure that the throttle valve is in working condition.

  • Release the accelerator completely..
  • Turn on the ignition and wait for 10 seconds.
  • Now turn off the ignition and wait for 10 seconds.
  • After turning it off, listen to the valve operation sound.

Third Method

Before you calibrate the throttle position sensor, there are certain prerequisites which are as follows-

  • Turn on the ignition and bring the car to the operating temperature.
  • The headlights and AC should be turned off.
  • The car should be in an in-park position.

Once your car meets the criteria, follow the steps described below.

  • Ensure that the accelerator pads are completely released.
  • Turn “on” the ignition switch and keep it on for three seconds. Do not start the engine.
  • The next step is fast. In 5 seconds, you must depress and release the accelerator 5 times.
  • Give the car and yourself a rest of 7-10 seconds.
  • Press down on the accelerator fully for 20 seconds. The Check Engine Light will start blinking. Within these 20 seconds, the CEL will turn on.
  • When CEL turns on, release the accelerator pads in 3 seconds.
  • Start your car’s engine and keep it idle for twenty seconds.
  • Rev up your engine a few times and check if the ignition and idle are synchronized or not.

Other Methods

  • To reset your electronic system, you can take the help of a wrench and disconnect the battery. Then, give it a rest for 10-15 minutes and reattach the wires. It will boost up your system and may fix the TPS issues.
  • Take your user manual and locate your fuse box. Unplug the fuse and replug it after a few minutes. It can help sometimes.

What if It Doesn’t Work?

Sometimes the above methods may not solve your problem. In such a case, you must take your car to the mechanic. The reason for the methods not working can be a distinct throttle. The timings and sequences of the modern-day throttles can be different. A mechanic can reset the TPS within minutes or replace it, depending on the circumstances.

Conclusion

You can’t take your car to the mechanic’s place every time you hear a sound or part malfunctions. The important part is definitely identifying the problem, understanding its root, and finding a way to fix it. You can fix several minor issues on your own. Resetting your throttle position sensor is one of them.

As you learned above, the process is simple. But if the above methods don’t solve your problem, you should definitely give a mechanic a visit. That’s the most ideal plan to fix your car issues.

Liam

Hi, I'm the initiator and writer of this blog. Cars were and will be my first love, and my favorite hobby, that's why I decided to start this blog and write about my discoveries and techniques to improve my cars or repair them.