Why is my Ford Fiesta's check engine light on?

I recently noticed that the check engine light on my Ford Fiesta has turned on. I'm not sure what could be causing this and I'm worried it could be a serious issue. Can anyone offer some insight on what could be causing this?

The check engine light can turn on for a variety of reasons, from minor issues such as a loose gas cap to more serious problems with the engine. It's important to get your car checked by a mechanic as soon as possible to determine the cause.

I had the same issue with my Ford Fiesta and it turned out to be an issue with the oxygen sensor. I would recommend taking your car to a trusted mechanic to get it properly diagnosed.

Sometimes the check engine light can turn on due to a low battery. Make sure to check your battery and get it replaced if necessary.