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.
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Activating/deactivating warning signals
The collision warning system’s visual signals
are activated automatically when the engine is
started if the collision warning system is
switched on.
The audible warning signal can be activated/ ...
Air vents in the door pillars
A - Closed
B - Open
C - Horizontal airflow
D - Vertical airflow
Direct the outer air vents toward the side windows to defrost.
Direct the vents into the passenger compartment to help maintain t ...
Other voice control settings found in MY CAR
Voice user setting: Two user profiles can be set by pressing MY CAR and
going to Settings Voice settings Voice user setting. Select User 1 or User 2.
Voice output volume: Press MY CAR and go t ...
