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:
Decals
There are various types of decals in the vehicle
whose purpose is to provide important information
in a clear and concise way. The importance
of these decals is explained as follows,
in descending ...
Disabling the remote control (front)
The IR transceiver for the front screen can be
switched off, which means that the remote
control cannot be used on the front screen.
This function can be activated under RSE
settings
Disabl ...
Indicator and warning symbols
Low oil pressure
If the light comes on while driving, stop the vehicle, stop the engine immediately,
and check the engine oil level. If the oil level is normal and the light stays on
after rest ...
