OBD model fitness is greater than 95%, including but not limited to:
(1) the United States in 1996 after the production of cars;
(2) after 2000, the production of cars in Europe after 2004, the production of diesel vehicles;
(3) domestic passenger cars (limited to 1 in July 2008 after the production of domestic brand cars);
(4) domestic commercial vehicles (need for protocols and interface support).

OBD monitoring device of multiple systems and components, including engine, catalytic converter, particle capture collector, oxygen sensor, emission control system, fuel system, GER and so on.
OBD is connected to the electronic control unit (ECU) through various kinds of information related to the emission, and ECU has the function of detecting and analyzing the related faults. When an emission fault occurs, the ECU records the failure information and the related code, and sends out the warning to the driver through the fault lamp. ECU through the standard data interface, to ensure that the fault information access and processing.