Autoblog may receive a share from purchases made via links on this page. Pricing and availability are subject to change.

Did your vehicle's check-engine light just pop on? An OBD-II scanner can point you in the right direction—and potentially save you a bundle.

And apps like Car Scanner ELM OBD2 have become pretty popular, simply because they provide you with an easy interface to read sensor information, set fault codes, and delete errors from your ECU.

Instead of an integrated scan tool with a small, monochrome LCD, like the majority of models available, BlueDriver consists of an OBD-II dongle connecting to a smartphone through Bluetooth.

So despite its professional appearance, this scanner does no more than any other consumer-grade OBD2 scanner will do. Justin Hughes But the UT850 is still a highly capable OBD2 scanner.