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:
Automatic transmission
P (Park)
Use this position when starting the engine or
parking the vehicle.
Never use P while the vehicle is in motion.
The parking brake should also be set whenever
the vehicle is parked.
...
Rear screen settings
When watching a video file, a pop-up menu can
be displayed by pressing on the
remote
control. The content of this menu will vary,
depending on the what is being played/viewed. ...
Interior
The standard upholstery in the five-occupant interior has a slightly coarse
woven feel said to be inspired by sportswear. Leather upholstery is available.
Volvo says storage space is improved both ...
