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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Incoming calls
Press OK/MENU (or the thumb wheel on
the steering wheel keypad) to answer a
call, even if the infotainment system is currently
in another mode (e.g., RADIO or
MEDIA).
Press EXIT to reject a c ...
Sound stage
The sound experience can be optimized for the driver's seat, both front seats
or the rear seat. If the front and rear seats are occupied, the sound stage setting
Front seats is recommended. Se ...
Erasing HomeLink Buttons
To erase programming from the three Home-
Link buttons (individual buttons cannot be
erased but can be “reprogrammed” as outlined
below), follow the step noted:
1. Press and hold the two outer ...
