Why is the oil pressure warning light on in my Audi 80?

I recently noticed that the oil pressure warning light on my Audi 80 has been constantly illuminated. I regularly change the oil and keep up with routine maintenance. Is this a common issue and how can I fix it?

The oil pressure warning light could be an indicator of a possible oil leak. It's important to have this checked by a certified mechanic as soon as possible, as running the engine on low oil can lead to costly damage. I recommend taking your Audi to a trusted mechanic for a thorough inspection.