1. **Comprehensive OBDII Scanner for Vehicles** The YM509 is a professional automotive scanner that provides essential OBD2 functionalities. It enables you to read and clear trouble codes, turn off the engine light, view freeze frame data, check I/M readiness status, retrieve the vehicle VIN, perform battery voltage tests, and display real-time data stream curves. Additionally, it features built-in 56801 DTCs, conducts O2 sensor tests, monitors vehicle systems in on-board mode, and executes Mode 06 EVAP system tests and Mode 08 on-board component tests. Simply connect it to your vehicle's OBDII port for quick diagnostics. 2. **Precise Engine Diagnosis** Monitor critical engine parameters such as ETC, MAP, and RPM with real-time data. The built-in library of 56801 DTC fault codes provides instant code definitions and troubleshooting guidance, facilitating effective repairs. The scanner also includes a voltage test feature to monitor battery performance, helping to prevent starting issues. 3. **Enhanced User Experience** The YM509 features a 2.8-inch high-resolution TFT color display, offering clear visuals and easy-to-read results. The advanced silicone buttons provide a tactile experience, and a buzzer gives sound feedback for easier operation, especially for visually impaired users. The ergonomic design caters to both European and American users. 4. **Wide Compatibility and Multilingual Support** This OBD2 scanner is compatible with most vehicles manufactured since 1996 that adhere to the OBD II protocol. It supports nine major protocols, ensuring reliability in various situations, whether at home or on the road. With support for multiple languages, it is user-friendly for individuals from diverse linguistic backgrounds. 5. **Efficient Engine Maintenance** The YM509 allows for quick fault code scanning, displaying immediate definitions to help identify issues. It can erase engine fault codes and turn off the Malfunction Indicator Light (MIL), ensuring your engine operates optimally. 6. **Saves Time and Money** This scanner quickly reads and clears engine fault codes, providing fast and accurate results. If the check engine light comes on, the YM509 will help you diagnose the problem right away, allowing for timely repairs without a trip to the mechanic. It is an essential tool for both home users and automotive repair professionals. 7. **Your Go-To Automotive Diagnostic Tool** The YM509 reads and clears Diagnostic Trouble Codes (DTCs), displays battery voltage, and provides real-time vehicle data. It monitors engine RPM, coolant temperature, and supports O2 sensor testing, ensuring comprehensive vehicle health insights. Use it to reset monitors and turn off the Check Engine Light (CEL) or MIL, making it a versatile diagnostic solution.