What causes the engine warning light to turn on in a Vauxhall Insignia?

I've noticed that my engine warning light has been turning on in my Vauxhall Insignia. What could be the cause of this and how can I fix it?

The engine warning light can turn on due to a variety of reasons. It could be a simple issue with a loose gas cap, or it could indicate a more serious problem with the engine. It's best to take your car to a mechanic or dealership for a diagnostic test to accurately determine the cause.

In my experience, a common reason for the engine warning light to turn on in a Vauxhall Insignia is a faulty oxygen sensor. This can usually be fixed by replacing the sensor, but it's important to get it checked out to prevent further damage to the engine.

Another possible cause for the engine warning light is a leaking or faulty gas cap. This is a simple fix and can usually be resolved by tightening or replacing the gas cap. If the light persists, it's best to have it checked out by a professional.