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:
Engine and cooling system
Under special conditions, for example when driving in hilly terrain, extreme
heat or with heavy loads, there is a risk that the engine and cooling system will
overheat. Proceed as follows to avoid ...
Remote control
The remote control included with the Rear Seat
Entertainment system (RSE)* can be used to
control all of the infotainment system's functions.
To use the remote, begin by pressing its
button to ...
Removing the remote key
The remote key can be removed from the ignition
slot by pulling it out. ...
