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Connect an OBD2 adapter

A few minutes are enough, and the Bluetooth pairing only needs to be done once.

What you need

• A Bluetooth OBD2 adapter of the ELM327 type.
• An Android phone with the DiagAuto AI app.
• A vehicle with an OBD2 port: almost all cars have an OBD2 port from the late 1990s and early 2000s onward, depending on the regulations of each country.

Step by step

1. 1

   Locate the vehicle's diagnostic port (often under the steering wheel, sometimes near the center console).

2. 2

   Push your OBD2 adapter (ELM327 type) in all the way.

3. 3

   Turn the ignition on.

4. 4

   Pair your adapter in the phone's Bluetooth settings (the code is often 0000 or 1234).

5. 5

   Open the DiagAuto AI app and tap “Connect an OBD adapter”.

6. 6

   Choose the adapter you paired in step 4.

7. 7

   Read your fault codes and let the AI explain the problem.

Won't connect?

• Follow the instructions supplied with your adapter: some models have a power button or a specific pairing procedure.
• Check that the ignition is on: without it, the adapter gets no response from the vehicle.
• Check that the adapter is pushed in all the way; a light usually comes on on it.
• If the adapter does not appear in the app's list, redo step 4: it must first be paired in the phone's Bluetooth settings.
• Still stuck? Write to us at contact@diagautoai.eu, stating the vehicle and the adapter model.

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