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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Removing the remote key
The remote key can be removed from the ignition
slot by pulling it out. ...
Rear center head restraint
Rear center head restraint
The center head restraint should be adjusted
according to the passenger's height. The
restraint should be carefully adjusted to support
the occupant's head.
• Pull ...
Main AM menu
AM menu
Show presets
Scan
Audio settings
Sound stage
Equalizer
Volume compensation
Reset all audio settings ...
