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:
Automatic locking
When the vehicle starts to move, the doors and
tailgate can be locked automatically. This feature
can be turned on or off by pressing MY
CAR and going to Car settings
Lock
settings
Aut ...
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 ...
Geartronic–manual shifting
Geartronic allows you to manually shift among
your vehicle's six forward speeds. Geartronic
can be selected at any time.
• To access the manual shifting position
from Drive (D), move the gear s ...
