Why is the check engine light on in my Ford Galaxy?

I recently noticed that the check engine light on my Ford Galaxy is on. What could be causing this issue and what steps should I take to fix it?

One possible reason for the check engine light being on could be a faulty oxygen sensor. I would recommend taking your car to a mechanic to have it checked.

The check engine light could also be due to a loose gas cap. Make sure it's tightly sealed and see if the light turns off.