PCM Data Car Diagnostic Code Reader Scanner , Auto Code Reader D900 scanner has CAN Protocol Support which gives wider vehicle coverage. It resets the check engine lights, reads and clears all generic, and some manufacturer specific, DTC, displays the I/M readiness status, views OBD II freeze frame data, displays pending codes, retrieves vehicle information (VIN), and determines the status of the malfunction indicator (MIL) lamp. Description: