\ \ I / x
OBD: Benefits for State Inspection
and Maintenance Programs
All 1996 and newer cars and light trucks have a powerful computer that uses second
generation on-board diagnostics (OBDII) technology to manage and monitor the vehicle's
operation. The computer not only does a good job of making sure the engine runs at peak
efficiency, but it also will alert the consumer of any malfunctioning emissions control
components that require attention.
Many states' vehicle emissions inspection and maintenance (I/M) programs have already
begun using OBD systems to inspect 1996 and newer vehicles. All mandatory inspection
and maintenance programs will eventually incorporate OBD.
Real world data has shown that the use of OBD for
inspecting vehicle emission control systems offers
many benefits to the consumer, the technician, and the
environment:
• Accurate diagnosis that leads to effective, durable
repairs.
• Short inspection time for the public.
• Early vehicle maintenance opportunity, which leads
to greater fuel efficiency and reliability.
• Incentive to car manufacturers to produce more
durable engines and emission controls.
• Simple and affordable testing method.
• Early detection of potential emission exceedance.
• State-of-the-art evaporative emission detection.
For more information on OBD and vehicle inspection
and maintenance programs, visit EPA's Web site at
.
Existing OBD I/M programs have
successfully tested millions of
vehicles:
• More than half the vehicles on
the road today are OBD-
equipped.
• OBD checks at centralized
stations are being completed
in five minutes or less.
• OBD fail rates currently average
less than 3 percent.
• The average repair cost for OBD
failed vehicles is comparable
to costs for the most rigorous
tailpipe tests.
• OBD is sensitive enough to
detect pinhole-sized leaks in the
fuel system or gas cap.
Web site: www.epa.gov/otaq/obd.htm
E-mail: obd@epa.gov
@ Printed on paper that contains at least 50 percent postconsumer fiber.
Office of Transportation and Air Quality
EPA420-F-02-015
August 2002
(Rev 9/2012)
------- |