Cool Check Engine Light After Impact References. Some check engine lights come on because the. Web how to inspect and address the issue to inspect the oil cap, start by ensuring the engine is cool.

Issues can range from anything minor, such as a loose gas cap, to problems that are more severe, such as a failing sensor. When you see the check engine light it doesn't necessarily mean you need to pull the car over to the side of the road and call a tow truck. Gently twist the cap counterclockwise to remove it.





