Why is my check engine light on in my Ford Focus?

I recently purchased a used 2014 Ford Focus and the check engine light keeps coming on. I'm not sure what the problem could be. Any suggestions?

It's important to get your car checked as soon as possible when the check engine light comes on. It could be something as simple as a loose gas cap or something more serious. I recommend bringing your car to a trusted mechanic for a diagnostic test.

I had a similar issue with my Ford Focus and it turned out to be a faulty oxygen sensor. I suggest getting it checked to avoid any potential damage to your car's engine.

The check engine light can come on for a variety of reasons, such as a malfunctioning catalytic converter or a faulty mass air flow sensor. It's best to get it checked by a professional to determine the exact issue and avoid any further problems.