I presume you mean oil pressure switch ~ I very much doubt it. Get a new one ya skinflint!Go to Halfords and get one from an old Fiat, it will work just fine.
Went for a spin today and the switch was working.I had made sure everything was connecting well before, so I don’t know why.
Sometimes OP switches can work, then not work, then work, then not work ~ a new one will make sure ~ LOL