Question 1

Which OBD2 adapters work with Odo?

Accepted Answer

Odo works with generic ELM327-compatible OBD2 adapters that connect over Bluetooth Low Energy (BLE 4.0 or newer) or WiFi. Bluetooth adapters we know work: Vgate iCar Pro BLE 4.0, Vgate iCar Pro 2S (BLE 5.0) and KVAEY ELM327. WiFi adapters we know work: Veepeak WiFi, Foxwell FW601 and Vgate vLinker MC+ / FS+. These are just examples. Any ELM327-compatible BLE adapter from an established seller should also work, so if you already own one that isn't listed, try it first. The same list, along with setup steps and troubleshooting tips, is in the app under Garage → OBD II → About & Compatibility.

Question 2

Should I get a Bluetooth or a WiFi OBD2 adapter?

Accepted Answer

For most people, a Bluetooth Low Energy (BLE) adapter is the easier choice. You connect it from inside Odo, with no pairing in iOS Settings. It doesn't take over your phone's WiFi or internet, and after the first connection Odo reconnects to it automatically on every drive. WiFi adapters work too, but you have to join the adapter's WiFi network in iOS Settings first, and iOS may not always rejoin it on its own.

Question 3

Which OBD2 adapters don't work with Odo?

Accepted Answer

Some adapters pair fine but only exchange data with their maker's own app, so third-party apps like Odo can't read from them. These include OBDLink MX+, BlueDriver, OBDeleven and Carista EVO. Classic Bluetooth ELM327 dongles, often labeled "v1.5 Bluetooth" or sold for Android, also won't work, because iPhone doesn't support classic Bluetooth for third-party accessories. Choose a BLE 4.0 or newer version instead.

Question 4

How do I connect my OBD2 adapter?

Accepted Answer

Plug the adapter into your car's OBD2 port (usually under the dashboard near the steering wheel) and turn the ignition on. Having the engine running works best. For a Bluetooth adapter, open Odo, go to Garage → OBD II and start the scan. There's no need to pair it in iOS Settings first. After the first connection, Odo reconnects to it automatically on future drives. For a WiFi adapter, join the adapter's WiFi network in iOS Settings first, then connect from the same Garage → OBD II screen.

Question 5

My OBD2 adapter doesn't show up in the scan. What can I do?

Accepted Answer

Some adapters, especially certain Vgate models, are claimed by iOS once they're paired in Settings and then stop appearing in other apps' scans. Try this: 1. Unplug the adapter. 2. If it's listed in iOS Settings → Bluetooth, tap it and choose Forget This Device. 3. Start the scan in Odo under Garage → OBD II. 4. Plug the adapter back in while the scan is still running. Also check that the ignition is on and that the adapter is a BLE model, not a classic Bluetooth "v1.5" dongle. If it still doesn't work, contact us from the app or the support page and we'll help.

Question 6

Will OBD2 work with my car?

Accepted Answer

Most petrol and diesel vehicles from 2008 onward use standard OBD2 and work with Odo, including Toyota, Lexus, Honda, Mazda, Ford, GM, Nissan, Subaru, Hyundai, Kia, BMW, Volvo, Mini and more. Recent Volkswagen Group cars (2020+) and Mercedes-Benz (2018+) give standard engine data but block enhanced diagnostics. 2018 and newer Stellantis vehicles (Jeep, RAM, Dodge, Chrysler, Fiat) have a security gateway that blocks third-party scanners unless you fit a bypass module. Teslas don't use standard OBD2 for vehicle data. The full list is in the app under Garage → OBD II → About & Compatibility. If your car isn't listed, try connecting first, and email us if it doesn't work.

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