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.
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Random
This function plays the tracks in random order
(shuffle). The random tracks/sound files can be
scrolled through in the normal way. To listen to
tracks in random order:
1. Press OK/MENU,
2. Tur ...
Steering wheel keypad
Standard steering wheel keypad
1 Left/right arrow keys: A short press moves
between preset radio stations or tracks on
a disc. Press and hold to search within
tracks or to tune to the next/pr ...
Driving Impressions
Even when equipped with the automatic transmission, the V50 2.4i accelerates
with spirit, though the engine growls when pushed. Despite a taut suspension,
ride comfort is generally satisfactory, b ...
