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:
Weight distribution affects handling
At the specified curb weight your vehicle has a tendency to understeer, which
means that the steering wheel has to be turned more than might seem appropriate
for the curvature of a bend. This ensu ...
Interrupting automatic opening/closing
Automatic opening or closing the tailgate can
be interrupted in four ways:
• By pressing the button on the
lighting panel.
• By pressing the button on the
remote key.
• By pressing the butt ...
Replacing batteries in the remote key/ PCC
The battery/batteries in the remote key/PCC should be replaced if:
The information symbol lights up and a text appears in the information display.
and/or
the vehicle's locks repeatedly do ...
