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:
Pairing and connecting an external device
Before an external device can be connected, it
must be paired to the infotainment system. The
procedure for connecting an external device
varies, depending whether or not the device
has previo ...
The Moves
While the interior is the S80's standout area, the driver's digs were never
the old model's main fault — a lackluster driving experience was. The S80's
optional V-8 engine adds some excitement, ma ...
Interior
The interior is driver oriented and designed to create a dynamic feel. The
lines on panels and surfaces connect different interior panels with each other
to create a harmonious style with "lo ...
