How do I troubleshoot the Ford Mondeo engine light?

My Ford Mondeo's engine light has been turning on intermittently. What could be causing this issue and what steps should I take to diagnose and fix it?

First, check your gas cap to make sure it is securely tightened. A loose gas cap can trigger the engine light. If that doesn't resolve the issue, it could be a problem with the oxygen sensor. I recommend taking your vehicle to a trusted mechanic to have it checked and repaired if necessary.

I had a similar issue with my Ford Mondeo and it turned out to be a faulty spark plug. I would suggest checking and possibly replacing your spark plugs as a potential solution.

Another potential cause for the engine light is a failing catalytic converter. This is a more serious issue that should be addressed immediately to avoid damaging other components of your engine. Take your car to a Ford dealership or a reputable mechanic for diagnosis and repair.