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:
Replacing batteries in the remote key/PCC
The battery/batteries in the remote key/PCC
should be replaced if:
• The information symbol lights up and a text
appears in the information display.
and/or
• the vehicle's locks repeatedly do n ...
Changing
WARNING
Connect and disconnect the positive and negative cables in the correct sequence.
Removal
Switch off the ignition, remove the remote key from the ignition slot and wait
at least 5 ...
Disconnecting the cell phone
The cell phone is automatically disconnected
from the infotainment system if it is moved out
of range.
The cell phone can be manually disconnected
from the hands-free system by pressing and
h ...
