Tips for Troubleshooting Bluetooth Connection on your ELM327 Scanner


  • Make sure your ELM327 Bluetooth Scanner and Smartphone/Tablet/PC are paired within the device's settings
  • Make sure you have selected the correct Bluetooth device WITHIN the App or Software Settings
  • Check to make sure your Smartphone/Tablet/PC are not automatically connected to your car stereo's Bluetooth. This would prevent it from connecting to your OBD2 Scanner
  • Make sure other diagnostic apps aren't connected and running in the background
  • Make sure your ignition is on or engine is running
  • Try unplugging your OBD2 Scanner and plugging it back in
  • Try turning off your Smartphone/Tablet/PC Bluetooth, then turning it back on
  • Try unpairing the OBD2 Scanner from your Smartphone/Tablet/PC, then pairing it again
  • Restart your Smartphone/Tablet/PC