You may have seen a "check engine" sign on your car's dashboard when driving your vehicle. Maybe "service engine soon," or just "check". What does this mean if the alarm won't turn off, or comes on when you're driving? Find out in this automotive video tutorial how to read those trouble codes on your automobile.
These indication lights on you auto's dash means that vehicle's Onboard diagnostic (OBD) computer has detected a problem somewhere in the engine management system. It's simply a heads up that you automobile needs attention.
There a lot of tools that will help you troubleshoot these truck or car trouble codes if you want to figure it out yourself. See all about it right here, with Haynes.