Does my OBD2 data sync with iCloud?
Yes. Trip engine summaries and recordings, custom readings and each vehicle's engine data, including its code history, sync through your private iCloud account.
Yes. Odo syncs your OBD2 data with the rest of your data through your private iCloud account: each trip's engine summary and its second-by-second engine recording, your custom readings, and each vehicle's engine data, including its trouble code history. The adapter pairing stays on the device, so on a new iPhone you connect the adapter once from Garage → OBD II. More at /features/icloud-sync-backup.