1. read engine or emission related fault codes error codes. 2. erase and delete the fault code, 3. turns off check engine light (mil), warning light, clears codes and resets m-onitors 4. retrieves generic (p0, p2, p3 and u0), manufacturer specific (p1, p3 and u1) codes and pending codes 5. easily determines the cause of the check engine light (mil), show definitions of the fault codes. 6. displays m-onitor and i/m readiness status (emissions) 7. reads live pcm data stream 8. displays live sensor data readings in both text mode and graph mode (1996 and newer vehicles) 9. storage data stream, and playback, printing the stored sensor readings. 10. views freeze frame data to analyze the real cause of engine failures 11. displays live o2 oxygen sensor test data 12. enhanced obd2 mode 6 on board m-onitoring test results for specific.