We didn’t look into things pressure cooker wise too carefully when we changed to an induction job (which is fantastic by the way - all the control of gas with a much easier clean).
It was the only pan casualty. Basically we used a magnet to determine which pans would and would not work. All our Le Creuset pans passed the test along with every other pan apart from the pressure cooker. And as I can make Christmas puds in the slow cooker or indeed the oven as I discovered last Christmas, my sole reason for having it has gone.
I know you can buy pressure cookers that do work on induction hobs but I’ve decided not to bother. The articles seems to imply any PC will work. My understanding is that pans need some iron in the mix so stainless steel, aluminium, copper, glass or hard anodised will not work unless they have an induction plate built into the base.