Why does the engine warning light on my Audi 80 keep coming on?

I have a 2006 Audi 80 with around 150k miles on it. I've recently noticed that the check engine light keeps coming on, even after I've cleared the error codes. What could be causing this and how can I fix it?

It's possible that your engine's oxygen sensor is faulty and needs to be replaced. A proper diagnostic test at a certified mechanic can confirm this and they can replace the sensor if needed.

Make sure you're using the right type of fuel for your Audi 80. Using low-quality or incorrect fuel can cause the engine light to come on. As a general rule, always use premium fuel for your luxury vehicle.