In any event, the smaller of these two readers, the Innova 3011, is a small unit about the size of a pack of smokes and only has two buttons plus a digital readout screen with decent resolution.

Reading and understanding OBD2 trouble codes today couldn't be easier. This is partly because of tools like Innova's Digital CAN OBD2 Code Reader.

Best Overall: Innova OBD2 Scanner Best Value: Motopower OBD2 Scanner Code Reader Best High-End: Topdon Artidiag Pro San Tool Best for Smartphones: BlueDriver Pro OBD2 Bluetooth Car Diagnostic Scan ...

Having a hard time interpreting the car codes your dashboard is displaying? Car codes can be confusing, so here are the best OBD2 scanners for reading, analyzing and clearing diagnostic trouble ...