Could just be a glitch, about 4 weeks ago my 'new' abarth suddenly (for one short journey) came up with a TPMS system (I think it was) error, couldn't read any tyre, I can't remember the exact message on-screen, at the time I thought 'great'

...but when I finished my short 3 mile journey , I just cycled the ignition and it was back to normal. Never came back since.
I did check prior to my first post that that Ducato rings are available, which tells me there is a need for them