What should I do if my Audi 80's check engine light comes on?

I recently noticed that the check engine light on my Audi 80 has turned on. What could be the possible causes for this and what steps should I take to address it?

First, don't panic. The check engine light can be triggered by a number of things, from a loose gas cap to a more serious engine issue. The best course of action is to get your car diagnosed by a certified mechanic to determine the exact problem.

Check the gas cap first. A loose or faulty gas cap is one of the most common reasons for the check engine light to come on. If the gas cap is loose, simply tighten it. If it's damaged, get it replaced.

If the gas cap is not the issue, it could be a problem with the oxygen sensor, spark plugs, or catalytic converter. These are all important components for your car's performance and should be checked and fixed by a mechanic as soon as possible.