Autel MS309 OBDII Code Reader and Scanner The Autel MS309 is a compact, easytouse diagnostic tool designed to help car owners quickly pinpoint problems, avoid unnecessary costs, and ensure their vehicle is ready for inspections. It works with all OBDIIcompliant vehicles and connects directly via a standard 16pin OBD2 cable, drawing power from the vehicle without the need for batteries. Key Features and Benefits: Read and Clear Codes: Retrieve generic, manufacturerspecific, and pending diagnostic trouble codes (DTCs) within seconds. Each code is displayed along with its definition, allowing you to identify the issue accurately and act with confidence. After completing repairs, clear codes to reset the system. Check Engine Light Diagnosis: Save time and money by quickly discovering why the check engine light is on. Whether it is a loose fuel cap, worn spark plugs, or a faulty ignition coil, the MS309 helps you confirm the cause before visiting a . I/M Readiness and Emissions Check: Retrieve readiness status for key emissionrelated systems including misfire monitors, fuel system monitors, catalytic converters, oxygen sensors, and EVAP systems. This ensures your vehicle is prepared to pass emissions or smog inspections, preventing costly failed tests. Freeze Frame Data Retrieval: Access vital engine information captured at the time a fault was detected, such as RPM, fuel pressure, fuel trim, and coolant temperature. Use this data to better understand performance issues. Vehicle Information Access: Read VIN, calibration IDs, and calibration verification numbers (CVNs) to confirm ECU integrity — especially useful when a used vehicle. UserFriendly Operation: Simple interface ideal for both beginners and experienced car enthusiasts. No external power source required; just plug in and begin diagnostics. Practical Applications: 1. Pre Assessment: Before visiting a mechanic, use the MS309 to identify fault codes and understand potential costs. 2. Emissions Test Preparation: Check your car's readiness status to ensure it meets requirements before scheduling an inspection. 3. Used Car Evaluation: Verify vehicle information and ECU specifications before , helping prevent costly surprises. Specifications: Model: Autel MS309 Compatibility: All OBDIIcompliant vehicles Interface: Standard 16pin OBD2 connector Power Supply: Powered directly from vehicle, no batteries required Display: Clear screen showing DTC codes with definitions The Autel MS309 provides accurate diagnostics, easy operation, and quick results, making it an essential tool for vehicle owners who want to maintain their cars efficiently and avoid unnecessary expenses.