1Fitment: The OBD2 engine fault code reader is applicable replacement for Mercedes?Benz W211 R230 with for Sbc systems, which can be easily repaired without replace the new control module. 2Function: Can scan car diagnostic trouble codes in seconds to pinpoint emission related issues, read, clear codes, view Dtc definition, turn off check engine light, check I/M readiness status, retrieve freeze frame data and vehicle information. 3High Efficiency: Retrieve generic codes, manufacturer specific codes, and pending codes in seconds and display Dtc definitions under the codes, quickly locating the problem areas, then clear or reset the codes after proper repairs. 4Easy to Use: Each code is followed by its definition, saving time and effort, quickly locating the problem location, perfect for car DIYers and beginners. When you are reading codes, the corresponding Dtc definition is placed below the code. 5Operation: Plug in the Obdii communication port, turn on the ignition switch, call twice to indicate that the device is working normally, restore the maintenance mode switch when the Busy indicator is on, and complete the data recovery after 10 seconds.