Airbag warnings that disappear after 10 mins

[DaevM]

I'm just starting out on this interesting journey of discovery. Two seperate intermittent incidents. Reported first to garage, booked in for diagnostics (2nd June!!) fault cleared without using vehicle an hour later. Had tried full power off/on and switchining airbag off/on, neither worked. Cancelled diagnostic garage appointment ( should've known better ).
Occured again following day. Came on, ignored. Cleared about 15 mins later after a very short drive and 10 mins in Lidls.
Awaiting 3rd occurrence before rebooking diagnostics with garage.
Searched forum during first instance, found nothing. Searched against n this morning and came across this ( and associated posts).
I had recently installed dashcam wiring in usual bodgit & scarper style so may have disturbed something. Coincidentally both times it happened I had just completed solar charge ( via domestic battery ) cycle. Shouldn't imagine it's relevant but y'know, MG4 .
So grateful for forum and it's marvellous members, thanks for being there guys 'n' gals

Interestingly enough.... Been out in it a couple of times, no issue. Charged it on Friday. Error code occured. Went out briefly with a 10 min. stop in the middle. Error code still registered. Put it away for the night. Gone by Saturday morning and didn't come back again ( yet). So looks to be charge related. I think each instance has been where I've ended up a bit close to the garage wall ( it's Tetris in there!!) and have had to apply pressure to the plug to get the angle to squeeze it into the socket...