One of the smallest OBD-II automotive diagnostic scanners around, the Ancel BD310 does double duty as a wired device or as one that connects through Bluetooth for greater flexibility. A bargain at ...

OBD2 scanners such as this one that’s just $30 ... What’s more, it comes with a lifetime of software updates, though access to a computer is required. No batteries are needed, as it receives ...

Scan tools connect to the vehicle's control computer (or more realistically ... the system makes a note of this by storing something called a diagnostic trouble code, or DTC for short.