Description
YMIOT • OBD2 Automotive Diagnostic Tool YM509
The YM509 from YMIOT is a professional-grade OBD2 diagnostic scanner designed for technicians and informed vehicle owners. With a high-resolution 2.8-inch TFT color screen, durable silicone controls, and adjustable backlight and buzzer settings, this tool delivers reliable performance. The instrument supports vehicles powered by 12-volt gasoline engines manufactured in the US from 1996 onward, Europe from 2003, and many Asian markets. Built-in chip technology speeds up operations while offering real-time data curves, fault code reading and clearing, battery monitoring, and full OBD2 protocol coverage.
Key benefits
- Reads, displays and clears Diagnostic Trouble Codes (DTCs), including real-time data and freeze-frame snapshots
- Battery voltage test with real-time monitoring and voltage curve display
- I/M readiness check, Mode-6 and Mode-8 system/component testing, oxygen sensor diagnostics, VIN and vehicle info retrieval
- Robust interface: 13 languages, durable buttons, hollow design with hang-hook, brightness and buzzer volume adjustment
- High compatibility via support of nine standard OBDII/EOBD protocols for most US, European, and Asian 12-V gasoline vehicles
Supported protocols
- SAE J1850 PWM (41.6 kbps)
- SAE J1850 VPW (10.4 kbps)
- ISO 9141-2 (5-baud init / 10.4 kbps)
- ISO 14230-4 KWP (5-baud init and fast init, 10.4 kbps)
- ISO 15765-4 CAN (11-bit ID, 500 kbps)
- ISO 15765-4 CAN (29-bit ID, 500 kbps)
- ISO 15765-4 CAN (11-bit ID, 250 kbps)
- ISO 15765-4 CAN (29-bit ID, 250 kbps)
- ISO 15765-4 CAN (29-bit ID, 251 kbps)
Supported functions
Depending on vehicle compatibility, the following functions are supported:
- Reads and clears engine fault codes, views current, pending, permanent DTCs
- Freeze frame data capturing related to emission faults
- I/M readiness status for emission systems
- Displays real-time sensor data and graph data curves (speed, RPM, coolant temp, etc.)
- Mode 6 / Mode 8 tests for system and component/evap diagnostics
- Oxygen sensor inspection and testing
- Battery voltage measurement and continuous monitoring
- Vehicle identification (VIN), basic vehicle information retrieval
Included items
- 1 × YM509 OBD2 diagnostic scanner device
- 1 × user manual (multilingual, including English; includes part/model number YM509)
Supported languages
English, Chinese, Korean, Japanese, Russian, Polish, Portuguese, Finnish, Italian, French, Spanish, Dutch, German














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