How To Pair A Bluetooth 3.0 ELM327 Device On Windows And Android:

Bluetooth 3.0 ELM327 Device Android Setup

Plug the ELM327 adapter into your vehicle’s OBD-II port and turn on the ignition.
On your Android device, go to Settings > Bluetooth and turn on Bluetooth.
Scan for new devices. The ELM327 adapter should appear as “OBDII”, “OBD2”, or a similar name.
Tap on the ELM327 device to pair. When prompted for a PIN code, enter “1234”, “0000”, “7890”, or “1111”.
Once paired, download and install an OBDAI app from the Google Play Store.
Open the app and go to its settings. Select the paired ELM327 device as the Bluetooth connection.
The app should now connect to your vehicle’s ECU through the ELM327 adapter.

Plug the ELM327 adapter into your vehicle’s OBD-II port and turn on the ignitio.
On your Windows PC, go to Settings > Devices > Bluetooth & other devices.
Click “Add Bluetooth or other device” and select “Bluetooth”.
The ELM327 adapter should appear in the list of available devices. Click on it to pair.
When prompted for a PIN code, enter “1234”, “0000”, or the code provided with your device.
Once paired, the ELM327 will be assigned a COM port number. Note this number for later use.
Download and install OBDAI:
Open the software and go to its connection settings. Select the COM port assigned to your ELM327 device and enter it on USB/BT3.0.
The software should now connect to your vehicle’s ECU through the ELM327 adapter.

If pairing fails, try unplugging the ELM327 adapter and plugging it back in.
Ensure your device’s Bluetooth is compatible with Bluetooth 3.0.
Some adapters may require you to change your device’s Bluetooth PIN to match the ELM327’s PIN.

Daniel-Blackmon