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How to Identify a Faulty TPMS Sensor using FORScan
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How to Identify a Faulty TPMS Sensor using FORScan

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The Tire Pressure Monitoring System (TPMS) is an electronic system equipped on US vehicles produced from 2008 to the present. It monitors the real time air pressure data inside the tires. Getting the correct tire pressure data on the vehicle is crucial to safety driving. Thus, it's essential to know when your TPMS sensor is giving out faulty information. This can be done using the FORScan software.

A video created by SY Diagnostics shows us how to locate and identify a faulty TPMS sensor with the use of ForScan. This was done on a 2019 Ford Fiesta Mk8, which can also be applied on other Ford models, such as Mondeo, Kuga, and Focus. Check it out on the video below:

The main function of the TPMS is to help prevent road accidents, avoid tire wears and address poor fuel economy from under-inflated tires. Normally, you will find the tire-pressure sensors attached to each of the tire's valve-stem assembly. A warning light or signal will usually display in the vehicle's instrument cluster when the tire's air pressured had dropped to a dangerously low level of about 25 percent below the recommended tire pressure.  

A second type of TPMS employs anti-lock-braking system's wheel-speed sensors instead of tire-pressure sensors in the tires. It detects if a particular rotational speed of a tire is out of sync from the other tires. The change in the rotational speed could indicate that the tire has lost some air pressure. 

Make sure to reaffix the valve-stem cap right after inflating the tires or checking the air pressure. This would help the TPMS system of your vehicle remain operational for an extended period. 

Special thanks to SY Diagnostics for coming up with an amazing video guide. Please check out their Youtube channel for more of their videos. 

To diagnose your vehicle using FORScan effectively, you will need a reliable OBD2 adapter. Below are our featured OBD2 devices that work flawlessly with FORScan.

Note: For FORScan coding modifications, we recommend using the OBD2 USB adapter for it provides a more stable connection.