Description
YMIOT • OBD automotive diagnostic tool B18
The YMIOT B18 OBD automotive diagnostic tool is a diagnostic module intended for professional use in automotive aftermarket and workshop environments. Designed with industry-grade components, it supports nine OBD-II communication protocols including both SAE J1850 variants, ISO 9141-2, ISO 14230-4 (KWP2000), and multiple ISO 15765-4 CAN formats. Its firmware can be upgraded remotely via OTA for custom software versions, enabling ongoing compatibility with newer vehicle models. It excels as a component in diagnostic adapters, scanner devices, and integration projects.
Key benefits
- Comprehensive protocol support for wide vehicle compatibility across gasoline, diesel, and older models
- Stable communication across all supported protocols, ensuring reliable diagnostics and data integrity
- Remote OTA firmware updates (custom-software version), eliminates the need to return hardware for upgrades
- Compact, high-density circuit board design facilitates integration into diagnostic tools and accessories
Supported protocols
- SAE J1850 PWM (41.6 kbps)
- SAE J1850 VPW (10.4 kbps)
- ISO 9141-2
- ISO 14230-4 KWP2000 (slow and fast init)
- ISO 15765-4 CAN (11-bit/29-bit, 250 kbps and 500 kbps)
Supported functions
Depending on vehicle compatibility the following functions are supported:
- Reading emission-related diagnostic trouble codes (DTCs)
- Clearing stored fault codes
- Real-time data monitoring (live sensor values via standard OBD PIDs)
- Freeze-frame data retrieval
- Remote maintenance and firmware upgrades (custom software versions only)
Included items
- 1 × YMIOT B18 OBD-II decoding module









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