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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Menu structure
FM Menu
1. Radio Text
2. Audio Settings
1. Surround
2. Equalizer Fr
3. Equalizer Rr
4. Reset All
AM Menu
See Audio S ...
Operation
The seats can be adjusted for a short period
after unlocking the door with the remote control
without the key in the ignition slot. Seat
adjustment is normally made when the ignition
is on and ...
Under the Hood
Both front- and all-wheel-drive 2.5T models hold a 208-horsepower,
turbocharged 2.5-liter inline-five-cylinder that produces 236 pounds-feet of
torque and works with a five-speed-automatic transmi ...
