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:
Air distribution
The incoming air is distributed from a number
of different vents in the passenger compartment.
Air distribution is fully automatic in AUTO
mode.
If desired, air distribution can be controlled ...
Warning symbols on the battery
NOTE
A used battery should be disposed of in an
environmentally responsible manner. Consult
your Volvo retailer or take the battery to
a recycling station. ...
Replacing the battery in the remote key
The batteries should be replaced if:
The information symbol illuminates and Low battery in remote control. Please
change batteries. is shown in the display and/or
if the locks do not react af ...
