Car Diagnostics
UK EN

Connecting an OBD adapter

The platform works with most ELM327-based OBD-II adapters (and compatible chips) over Bluetooth Classic (SPP).

Supported models

  • ELM327 v1.5+ (Bluetooth Classic SPP)
  • OBDLink MX+
  • Vgate iCar Pro
  • ScanTool OBDLink LX

Step-by-step pairing

  1. Turn on the vehicle ignition (the engine doesn’t need to be running).
  2. Plug the adapter into the OBD-II port (usually under the dashboard).
  3. In Android Bluetooth settings find the device (name starts with OBDII, ELM, or V-Link).
  4. Pair the device (default PIN is 1234 or 0000).
  5. In the Car Diagnostics app open the “Bluetooth” screen → select the paired device → tap “Connect”.

Troubleshooting

See FAQ and Troubleshooting.

TODO: add port photos, screenshots, links to drivers/permission helpers.