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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Power windows
The power windows are controlled by buttons
in the arm rests. The ignition switch must be
ON1 (ignition key in position I, II or the engine
running) for the electrically operated windows
to functi ...
Getting Around
The C30 is a fun car to drive. It has a 227-horsepower, turbocharged
five-cylinder engine that makes 236 pounds-feet of torque, which is a lot of
power for such a small car. It's estimated to get ...
Bluetooth streaming audio (BT)
The vehicle's audio system is equipped with
Bluetooth
, which makes it possible to play
streaming audio files from a Bluetooth
device
such as a cell phone or personal digital assistant
(PDA). N ...
