From another forum I’m a member of…
“Apparently this is not uncommon on Fiat Ducatos, particularly if the battery as run flat. Carthago owners recommended Crash-Data to repair/reset the Air Bag Module. See https://www.crashdata.co.uk/fiat-citroen-peugeot-01375110080-airbag-reset-p/4698.htm
I contacted them by email Saturday afternoon after they had closed and received a quick response then and again on Sunday when I removed the module and asked about returning it for repair. I returned the airbag module to CrashData in Liverpool on Monday and received the repaired/reset unit back this morning (Wednesday). I’ve refitted it and the warning light now goes out – hopefully it will stay that way. Brilliant service. Total cost £83 including VAT and return postage.”
Barry