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.
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Center console buttons
Active Bending Lights
The beams of these headlights
adjust laterally to help light up a
curve according to movements
of the steering wheel when the
vehicle is turning. This function
is activ ...
Volvo maintenance
Volvo advises you to follow the maintenance program outlined in the Warranty
and Service Records Information booklet. This maintenance program contains inspections
and services necessary for the p ...
Power brakes function only when the engine is running
The power brakes utilize vacuum pressure which is only created when the engine
is running. Never let the vehicle roll to a stop with the engine switched off.
If the power brakes are not working, co ...
