You’re cruising down the highway and your check engine light comes on. What to do? Well, if you have the new Motorscan adapter, just turn on your smartphone and you’ll know exactly what’s wrong with your Harley.

Smart Vehicle Diagnostics, in conjunction with Diagnostica, has released a new Motorscan tool that works with your smartphone to diagnose and read error codes thrown by your bike engine. It is designed specifically for Harley-Davidson motorcycles manufactured from 2001 to 2015. This tiny plug-and-play adapter connects to your bike and it can be left in indefinitely.

Next, you install an app that communicates via Bluetooth with the adapter. Using the app, you can read codes with detailed descriptions on your smartphone. You can also clear the engine light and monitor things such as engine temperature and battery.

Alex Leonov, managing partner at Smart Vehicle Diagnostics, said the Motorscan adapter was created so that Harley-Davidson owners can easily diagnose their bikes themselves, saving time and money on unnecessary shop visits. The Motorscan tool also lets you know when you actually should visit your mechanic, he added.

For more information, see the website.