Had this issue for a while now, but need to get it sorted as the old VRS is going up for sale

I'll still check in on the forum every now and then to see if anyone needs oil pressure help

MAF value on VCDS is reading the max value, no matter it is plugged in or not. Engine is running and pulling like normal, perhaps with worse fuel economy than it should have. Engine light on obviously.
Any ideas?
Cheers