Roadi RDT51 Diagnostic Trouble Code Reader for OBDII Vehicles with Display Code Definitions, Detect VIN, Freeze Frame and I/M Readiness Status Works with all 1996 and newer cars and light trucks that are OBD2 compliant Easy to-read large LCD display, unit fits conveniently in the palm or your hand Enables you to quickly and easily link to your vehicle with detachable cables Retrieves VIN(Vehicle Identification Number)on 2002 and newer vehicles that support mode 9, reads SAE, generic(P0, P2, P3, U0)and manufacturer specific (P1, P3, and U1) Diagnostic Trouble Codes (DTC) Software easily upgradable via computer USB