ok I wasn't aware there was any electronics at the gear lever end I thought it was all done in the gearbox , maybe I need to look into replacing that first , I wasn't going to be swapping the whole box over just the mechatronic valve body section , still waiting for the fault to reappear so I can re scan and see what it says.
I did replace the battery today as it seems low voltage can cause some weird issues with these cars, alternator was only replaced a little while ago so that rules out any voltage issues hopefully.