How to troubleshoot a BMW check engine light?

I have a 2015 BMW 3 series and the check engine light just came on. What could be the cause and how can I fix it?

The check engine light can come on for a variety of reasons, from a loose gas cap to something more serious, like a faulty oxygen sensor. I would suggest taking your BMW to a trusted mechanic to get the code read and properly diagnose the issue. Depending on the cause, it could be a simple fix or something that requires a bit more attention.

In my experience, the check engine light can be an indicator of something as simple as a loose gas cap, or something more complex like an electrical issue. Make sure to check the gas cap first and see if that solves the problem. If not, it's best to take your car to a certified BMW technician who has the proper tools and knowledge to diagnose and fix the issue. Don't wait too long to get it checked out, as ignoring the check engine light can lead to bigger, more expensive problems down the road.