Why is my Ford S-Max displaying a check engine light?

I have a Ford S-Max and I noticed the check engine light turned on while I was driving. What could be causing this and how can I fix it?

It could be a number of things causing your check engine light to turn on. It's important to have your car diagnosed by a professional to determine the exact issue. In the meantime, try checking your gas cap to make sure it's on tight, as this can be a common cause for the light to turn on.

I had the same issue with my Ford S-Max and it turned out to be a faulty oxygen sensor. I would recommend taking it to a mechanic to get it checked out.

I've had this problem with my Ford S-Max before and it ended up being a loose or damaged spark plug. Make sure to have your spark plugs checked and replaced if necessary.