... , P3, and U0), manufacturer specific (P1, P3, and U1) codes, and pending codes· OBD II repair information· Turn off Check Engine Light ... monitor and I/M readiness status (emissions)· Read live PCM datastream · Display live O2 sensor test data· Graph data (1996 and newer ... ) · Read, store & playback live sensor data· Memory/battery backup for off-vehicle data review ...