Why is the engine oil light on in my 1992 Audi 80?

I just bought a used 1992 Audi 80 and noticed that the engine oil light is constantly on. What could be causing this issue and how can I fix it?

The most common cause of the engine oil light being on is low oil levels. Check your oil levels and if they are low, top it off with the recommended oil for your Audi 80.

Another possible cause could be a faulty oil pressure sensor. This can be easily replaced by a mechanic.