... protocols MAXISCAN MS509Auto Scannerdiagnostic toolThe MaxiScan MS509 OBDII/EOBD Scanner supports all nine OBDII test modes on all OBD2 ... & Asian vehicles.2.Easily determines the cause of the a??Check Engine Lighta??.3.Retrieves generic (P0, P2, P3, & U0) & ... manufacturer specific (P1, P3, and U1) codes.4.Turns off Check Engine Light, clears codes & resets monitors.5.Displays DTC definitions onscreen ...