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How To Test A Wheel Speed Sensor

Wheel speed sensors are an important part of modern cars. They help you determine the speed at which your car is moving and can tell you how fast to drive in order to maintain your desired speed. Depending on the make and model of your car, wheel speed sensors may be located on the axle, the hub, or even the wheel itself. If yours is missing or damaged, you may not be able to determine your car’s actual speed. In this article, we will show you how to test a wheel speed sensor and help you determine if it’s faulty or not. By doing so, you can fix the issue before it causes any further problems.

What is a Wheel Speed Sensor?

A wheel speed sensor is a device that measures the rotational speed of a wheel. This information is used to determine the vehicle’s direction and speed. Wheel speed sensors are typically located on the axle of the wheels themselves, but they can also be found on other parts of the vehicle, such as on the chassis or differential between the axles.

How to Test a Wheel Speed Sensor

Testing a wheel speed sensor can help identify issues with your vehicle’s speedometer. It’s important to keep in mind that not all sensors are created equal, so some tests may be more accurate than others.

To test a wheel speed sensor on a car, start by turning the engine off and removing the battery cable. Next, place an object between the tire and the wheel hub. Turn the wheel one full revolution and time how long it takes for the object to move from its starting point to the center of the wheel. Compare that time to what your vehicle’s speedometer is reporting. If your time is longer than what the speedometer is reporting, then your sensor is probably broken and needs to be replaced. If your time is shorter than what the speedometer is reporting, then your sensor may be good but needs calibrating.

What to Do if the Wheel Speed Sensor is Not Working Properly

If you are having problems with your wheel speed sensor, there are a few things that you can do to troubleshoot the issue. The first thing that you should do is to check if the sensor is actually broken. If it is not, then you can try to adjust the sensor itself. However, if the sensor is broken, then you will have to replace the sensor.

If the sensor is not broken and it still does not seem to be working properly, then you can try to reset the sensor. To do this, you will need to remove the cover of the sensor and hold down two pins while turning the gearbox on its side. Once it turns off, release both pins and replace the cover.

If all of these solutions do not work, then you might have to replace the gearbox itself.


Testing your wheel speed sensor is an important part of maintaining optimal driving conditions. By knowing the tire’s rotational speed, you can keep your car running smoothly and avoid potential issues down the road. In this article, we will teach you how to test a wheel speed sensor and provide some helpful tips for keeping your vehicle in top condition.