1. Complete OBDII Mode Scanner for VehiclesAs a professional automotive scanner, the YM509 possesses all the OBD2 functions you need. It can read and clear codes, turn off the engine light or MIL, view ze frame data, read I/M readiness status, retrieve the vehicle VIN, perform battery voltage tests, display realtime data stream curves, feature builtin 56801 DTCs, conduct O2 sensor tests, monitor vehicle systems in onboard mode, and execute Mode 06 EVAP system tests and Mode 08 onboard test component tests. Using this automotive diagnostic scanner is incredibly simple. All you have to do is connect it to your vehicle's OBDII port, and you can diagnose automotive issues within seconds! 2. Accurate engine diagnosis: Identify factors affecting the engine by viewing realtime data such as ETC, MAP, and RPM. This car code reader is equipped with a builtin library of 56801 DTC fault codes, which can provide realtime code definitions and clues for your reference, starting car troubleshooting in the correct direction and effectively repairing the car. This scanner for car comes with voltage test feature to check realtime battery voltage and no more voltage too low to start the car again. 3. Product FeaturesThe YM509 scanner stands out with its unique features: it adopts an advanced 2.8inch highresolution TFT color display screen, providing clear test images and easy to read data results, replacing traditional black and white screens. The silicone button enhances the tactile sensation of the product and includes a buzzer that emits sound feedback when pressed, making it easier for visually impaired users to operate. Product design that conforms to ergonomics for European and American users. 4. High Compatibility and Support for 13 Language SwitchesWhether in your home garage or on the road in emergency situations, the OBD2 scanner diagnostic tool is your reliable automotive advisor. As a professional OBD2 device, it supports protocols including nine major ones. This code reader is compatible with most vehicles that adhere to the OBD II protocol since 1996. It allows users from different linguistic backgrounds to operate it easily and familiarly. We recommend including it as a necessity in your toolkit, making it an excellent choice for both households and automotive repair shops. 5. Maintaining Optimal Engine Condition The YM509 engine code reader provides quick access scanning, reads automotive fault codes, immediately displays their definitions on the screen, troubleshoots to find the root cause of the issue, erases engine fault codes, and turns off the MIL (Malfunction Indicator Light). 6. Save Time The scanner can help you or your mechanic understand if your car is in good condition by providing exceptionally accurate and rapid results, reading and clearing engine fault codes within seconds. If you want to find out the reason behind the check engine light, this device will instantly inform you and allow you to address the issue promptly. With this professional check engine code reader, you can check fault codes and display code definitions on your own without having to take your car to a mechanic shop. It helps you save time and repair costs, making it an essential OBD2 scanner diagnostic tool for both home use and auto repair shops. 7. Your Automotive Diagnostic ExpertThe YM509 Automotive Scanner Diagnostic Tool effortlessly reads and clears automotive DTC (Diagnostic Trouble Codes), displays battery voltage status, and realtime vehicle data stream functionality to read realtime data and retrieve the vehicle's VIN. It monitors engine RPM and coolant temperature parameters in realtime, displays realtime vehicle data curves, supports O2 sensor testing, turns off the CEL (Check Engine Light) or MIL, resets monitors, and more.