We’ve all been there. You’re driving along, and the check engine light suddenly comes on. It’s one of the most frustrating things because it can be hard to figure out what’s wrong. Is it something significant? Is it something minor? Is it something that’s going to cost a lot of money to fix? Here’s good news: In most cases, the check engine light is not a sign of something serious. It usually indicates a relatively minor problem that is easy to fix. These are some of the most common causes of a check engine light. Loose or Damaged Gas CapIf your gas cap is loose or damaged, it can cause your c…