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:
Switching HD on or off
The factory setting for HD radio is off. However, when driving through areas
with weak HD signals (fringe areas), you may experience that the radio repeatedly
switches between analogue/ digital an ...
Locking or unlocking the vehicle with the key
blade
Keyless drive keyhole cover
The driver's door on vehicles equipped with
keyless drive can be locked or unlocked with
the remote key's detachable key blade if necessary,
see page 61 for inform ...
Temporary Spare
A spare tire can be purchased for your vehicle as an accessory. Follow the instructions
included with the spare tire regarding use and stowing in the vehicle. See also
page 290 for additional info ...
