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:
Conserving electrical current
Keep the following in mind to help minimize battery drain:
When the engine is not running, avoid using ignition mode II. Many electrical
systems (the audio system, the optional navigation syste ...
Removing the key blade
Slide the spring loaded
catch to the side.
Pull the key blade straight
out of the remote key. ...
Gauges
Gauges in the instrument panel
1 Speedometer.
2 Fuel gauge. Please note that the fuel level
indicator in the gauge moves from right to
left as the amount of fuel in the tank
decreases. The a ...
