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:
Inflation pressure
Tire inflation pressure table
The following tire pressures are recommended by Volvo for your vehicle. Refer
to the tire inflation placard (see page 273 for its location) for information specific
...
Basic sound settings
Press SOUND to display the basic sound setting
menu (Bass, Treble, etc). Continue pressing
SOUND or OK/MENU to display the other
setting alternatives.
Adjust the setting by turning TUNE and sav ...
Location
Location ...
