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:
INFO—displaying additional information
In certain cases, more information may be
available (about a radio station, song, artist,
etc.) than is currently displayed on the screen.
Press the INFO button to display all of the
availabl ...
Location of the fuse boxes
1 Engine compartment
2 Under the glove compartment
3 Under the glove compartment
4 Cargo area ...
Stage 2: Checking inflation pressure
1. Connect the tire sealing system as described
in stage 1.
2. Refer to the inflation pressure table in this
chapter for the correct inflation pressure. If
the tire needs to be inflated, start ...
