How to troubleshoot a BMW 1 Series engine malfunction?

I recently bought a used BMW 1 Series and the check engine light has turned on. I have no experience with car maintenance and would like some advice on how to troubleshoot this issue. Can anyone offer any insight?

First, check the code that the check engine light is showing. This will help identify the specific issue with the engine. You can do this by purchasing an OBD-II code reader or taking it to a trusted mechanic.

Another important step is to check the oil level and quality. Low or dirty oil can cause engine malfunctions. Also check for any leaks or unusual noises from the engine.