What does MI in automotive OBD mean?

OBD as a moniker abbreviation, its full name is On Board Diagnostics, the Chinese meaning is: vehicle automatic diagnostic system. This system can monitor the engine electronic control system and other functional modules of the vehicle in real time during the operation of the car, if found abnormal working conditions, according to a specific algorithm to determine the specific faults, and diagnostic trouble code (DTC, Diagnostic Trouble Codes) stored in the form of memory in the system. The useful information obtained after the system self-diagnosis can provide help for the repair and maintenance of the vehicle, and the maintenance personnel can read the fault code by using the special instrument of the original automobile factory, so that they can quickly locate the faults in order to facilitate the repair of the vehicle and reduce the time of manual diagnosis.