How do I troubleshoot low tire pressure warning in my Audi?

I have been getting a persistent low tire pressure warning in my Audi. What could be causing this and what steps can I take to troubleshoot and fix it?

I had this issue before and it turned out to be a faulty tire pressure sensor. I suggest checking the sensors and getting them replaced if necessary.

It could also be a leak or puncture in your tire. Make sure you check the pressure and look for any visible damage to your tires.