Different makes and models of cars can have very different check engine error codes. It’s important to know the specifics of your car when it comes to checking for errors, as each manufacturer may use different codes or even a completely different system. When trying to diagnose an issue with the check engine light on, you’ll want to be aware that what worked on someone else’s car may not work on yours. Some makes and models are harder to read than others, and you need special tools and knowledge to do it right. Before you try to fix something yourself, you should do some research to make sure you are ready. Having access to service information specific to your vehicle can save a lot of time, allowing you to get right down to diagnosing and fixing whatever is causing the problem quickly and correctly.