OBD stands for On Board Diagnostics. The “II” signifies the version of the OBD specification being used. OBDII as an second on-board diagnostic system provides almost complete engine control and also monitors parts of the chassis, body and accessory devices, as well as the diagnostic control network of the car.
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. This was OBDI.
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.And OBD2 On-Board Diagnostic systems are in most cars and light trucks on the road today.
Most OBD-II cars had connectors in various positions under the dashboard and under the hood. All OBD-II cars have a connector located in the passenger compartment easily accessible from the driver's seat. Check under the dash or behind or near the ashtray. A cable is plugged into the OBD-II connector and connected to Autel scanner or another scan tool. Auto scanner is simple hand-held meters that display and clear trouble codes.
The data provided by OBD-II can often pinpoint the specific component that has malfunctioned, saving substantial time and cost compared to guess-and-replace repairs. Scanning OBD-II signals can also provide valuable information on the condition of a used car purchase.
Because of investment in the OBD-II scanner tool required, most repair shops charge a fee, to attach the scanning equipment and diagnose problems using the OBD-II system signals. Now with the obd2 scanner tool economical and easy to operate, it is now practical for almost anyone to access OBD-II signals and use them for their own testing and repairs.Connect easily and use software to quickly and automatically call up the OBD-II information.
As one of biggest OBD car diagnostic scanner tool manufacturers, Autel supplied Professional OBD car diagnostic scanner tool are designed with ability to quickly read & clear, the following are OBD2 car diagnostic scanner tool recommend, Include Autel Maxicheck Pro, MD808 Pro, MD805, MD802, etc.
Produkte können je nach Land/Region unterschiedliche Preise und Verfügbarkeiten haben.