The B25 is a compact and powerful Bluetooth OBD2 scanner adapter designed for wireless vehicle diagnostics and real-time data monitoring. Equipped with Bluetooth BLE 5.1 technology, it ensures fast, stable, and energy-efficient communication with mobile devices while maintaining broad compatibility with vehicles and diagnostic apps.
Powered by the YM1140 main control chip, the B25 supports a wide operating voltage range and is suitable for 12V gasoline vehicles, selected electric vehicles, and 24V systems. Its ultra-low power consumption and intelligent sleep mode make it ideal for long-term in-vehicle use.
Key Features
Bluetooth BLE 5.1 (backward compatible)
One-click connection without manual Bluetooth pairing
Works directly with diagnostic apps
Ultra-low operating current for energy efficiency
Automatic sleep mode after inactivity
Compact design with three-color LED status indicators
Free wireless firmware upgrades via YMOBD software
LED Indicator Status
Red: Power on
Blue: Connected to mobile phone
Green: Actively communicating with vehicle ECU
Diagnostic & Monitoring Functions
Smart Dashboard & HUD
Real-time display of vehicle speed, engine RPM, coolant temperature, battery voltage, and fuel consumption
Customizable dashboard items (fuel pressure, intake manifold pressure, hybrid battery level, and more)
HUD display support and night mode UI
Fault Code Diagnostics
Read, parse, and clear vehicle DTC fault codes
Built-in fault code database with extensive coverage
Malfunction Indicator Light (MIL) status monitoring with time and mileage statistics
Full ECU Diagnostics
Supports Unified Diagnostic Services (UDS)
Full system diagnostics for supported brands, including Mercedes, BMW, Porsche, Volkswagen, Toyota, Ford, Mazda, Nissan, and Hyundai
Covers multiple vehicle modules such as ABS/ESP, TPMS, steering systems, and more
Continuous updates for new vehicles and functions
Live Data Stream & Analysis
Access up to 88 types of live vehicle data streams
Supports real-time curve graphs, data storage, and playback
Includes freeze frame data and full vehicle frame records
Advanced Vehicle Information
Read VIN, CALID, CVN, ECU, ESN, and additional vehicle identifiers
One-click full vehicle scan with comprehensive data statistics
Diagnostic readiness status and specific monitor results
Trip & Performance Analysis
Trip statistics: distance, duration, average speed, and fuel consumption
Historical driving records
Vehicle performance tests, including acceleration, braking, and distance performance
App & Language Support
Works with software (displays product model and logo)
Compatible with third-party apps such as Car Scanner and Torque
Supports 25 languages and automatically matches the phone system language
Protocol Support
The B25 supports all 9 standard OBDII protocols for gasoline passenger vehicles, including CAN, ISO, and SAE standards, ensuring wide vehicle compatibility.
Vehicle Compatibility
Designed for 12V gasoline vehicles
Supports selected electric vehicles
Compatible with 24V systems
Suitable for most vehicles supporting OBD2 standards
