Switch Bluetooth OBDII OBD2 Diagnostic Scanner CAN Scan Tool Check Engine Light Car Code Reader Works with OBD-II compliant vehicles Bluetooth OBDII OBD2 Diagnostic Scanner is the newly developed wireless scan tool. It supports all OBD-II protocols Switch Bluetooth OBDII OBD2 Diagnostic Scanner CAN ELM 327 Scan Tool Check Engine Light Car Code Reader with Switch Read diagnostic trouble codes, both generic and manufacturer-specific, and display their meaning (over 3000 generic code definitions in the database). Clear trouble codes and turn off the MIL ("Check Engine" light)