OBD2UDS is a car diagnostic app for drivers, DIY repair users and mechanics who want more than a basic check engine code reader.

Connect a compatible ELM327 Bluetooth OBD2 adapter and turn your Android phone into an OBD2 scanner, live data dashboard and advanced UDS diagnostic tool for supported vehicles.

Main diagnostic features
- Read and clear engine fault codes
- View freeze frame and live sensor data
- Monitor RPM, coolant temperature, speed, engine load, fuel trims and more
- Check I/M readiness before an emissions test or smog check
- Use Mode 06 data to find misfires, sensor issues and borderline test results
- Capture oxygen sensor voltage waveforms to help check catalytic converter performance
- Read vehicle and ECU information, including VIN when supported

Advanced UDS diagnostics
For supported vehicles and control modules, OBD2UDS can go beyond standard engine OBD2:
- Full system scan for supported ECUs
- ABS, SRS airbag, transmission and powertrain checks when available
- Deeper diagnostic trouble code context
- One-tap AI-ready diagnostic prompt with vehicle data and fault code details

Live data and test tools
Build a real-time dashboard for the values you care about during a road test, repair check or used car inspection. OBD2UDS also includes acceleration testing, battery voltage and cranking drop checks, fuel and energy monitoring, cabin noise monitoring and annual inspection pre-check tools.

Useful for
- Check engine light diagnosis
- Used car inspection before buying
- Emissions readiness and smog check preparation
- DIY maintenance and repair
- Live data logging during road tests
- Quick mobile diagnostics in the workshop

OBD2UDS works with common ELM327 Bluetooth OBD2 adapters. Available functions depend on your vehicle, adapter quality, protocol support and selected ECU module. Use a reliable adapter and keep the ignition on while scanning.

Download OBD2UDS for practical OBD2 diagnostics, live data monitoring and advanced UDS scanning on Android.