In Ford Explorer 2010 model I had done this DIY to find out which TPMS is faulty. If there is a faulty TPMS it displays "Tire Pressure Sensor Fault" along with sign as shown in the picture below.
To know exactly which tyre sensor is not working just deflate and inflate the tyres one by one...
Front left tyre, deflate to 20psi and check the dashboard and if it displays low tyre pressure it means it is working properly. Inflate front left tyre to normal psi and try other tyres one by one. The one with faulty TPMS will not display low tyre pressure and it will remain as shown in the image below as Tire Pressure Sensor Fault. @Gauravbhai if you have this type of display try this.