How do states use OBD II for emission inspections?

Many states connect a computer directly to a vehicle's OBD II system. The inspector can then read "faults." In some states, this type of inspection has replaced the tailpipe emission test.
See also:
Compatible file formats via the USB socket
The following audio and video files are supported
by the system when playing a device connected
to the USB socket.
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Safety
There's no shortage of safety features in the C30, including standard
all-disc antilock brakes with electronic brake-force distribution and brake
assist, side-impact airbags for the front seats, s ...
Removing the center console
In order to make it possible to move the center
seat in the second row of seats as far forward
as possible (seven-seat models only), the rear
section of the center console can be removed.
• Pu ...
