With the Carly app and scanner you can carry out diagnostics on your car, uncover odometer fraud or code your vehicle. Easy and at the push of a button. With Carly OBD bluetooth scanner you can easily cut down on or avoid unexpected maintenance costs. Find out four tips and tricks that will help you save extra money on vehicle maintenance. The check engine light is a warning indicator on your car’s dashboard that tells you there is a problem with the engine. When it comes on, it’s important to check it with your OBD2 scanner, because it could be a sign of something serious. There are many causes of check engine light coming on