中文版  English
  Home News About us Products Contact
  Browse By Category
Antenna
Connector
Coaxial Cable
PAD
Phone
Laptop
  Contact us
Tel: 0769-85357514
Fax: 0769-85357514
Email: info@e-commtech.com
You Are Here: Home > News > Where did OBD II come from
Where did OBD II come from    12/28/2012
To combat its smog problem in the LA basin, the State of California started requiring emission control systems on 1966 model cars. The federal government extended these controls nationwide in 1968.

Congress passed the Clean Air Act in 1970 and established the Environmental Protection Agency (EPA). This started a series of graduated emission standards and requirements for maintenance of vehicles for extended periods of time. To meet these standards, manufacturers turned to electronically controlled fuel feed and ignition systems. Sensors measured engine performance and adjusted the systems to provide minimum pollution. These sensors were also accessed to provide early diagnostic assistance.

At first there were few standards and each manufacturer had their own systems and signals. In 1988, the Society of Automotive Engineers (SAE) set a standard connector plug and set of diagnostic test signals. The EPA adapted most of their standards from the SAE on-board diagnostic programs and recommendations. OBD-II is an expanded set of standards and practices developed by SAE and adopted by the EPA and CARB (California Air Resources Board) for implementation by January 1, 1996.
Home    │    News    │    About us    │    Products    │    Contact
Copyright 2010-2013 E-COMM Technology Co., Limited. All rights reserved     LED lighting
Michelle