Why does my Audi dashboard display 'Check Engine' light?

I've noticed that my 'Check Engine' light is always on whenever I start my Audi car. What could be the reason behind this and what should I do?

The 'Check Engine' light is a warning indicator that signifies an issue with the engine system. It could be a minor issue like a loose gas cap or a major problem. It is recommended to stop driving and get your car checked by a mechanic.

One of the common reasons for the 'Check Engine' light to come on is a faulty oxygen sensor. This can affect your car's performance and fuel efficiency. It is best to bring it to a certified Audi mechanic to have it replaced.