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:
Infotainment system overview
1 - Sockets for external audio sources (AUX and USB) 2 - Steering wheel keypad
3 - 7" display 4 - Center console control panel ...
Fault tracing and actions
If the message Windscreen Sensors
blocked is displayed, this means that the camera
is obscured and cannot detect pedestrians,
vehicles or road marker lines in front of the
vehicle.
This, in t ...
Limitations
The sensor used by City Safety™ is designed
to detect cars and other larger motor vehicles
ahead of your vehicle in both daylight and darkness.
However, there are certain limitations and the
la ...
