Hi, I had ecu recalibrated to latest spec.car still the same, cleaned/checked wiring, ,vigorously wiggled wiring harness when car running and unable to reproduce fault,

Was ok for a couple of days but reoccured. Fault mainly seems to occur when cornering,car runs very rich when fault occurs , if I can keep it running, cant see a fuel restriction would cause this code? I will try and check fuel filter anyway.

Just while ive been testing , if I disconnect the lambda the EAC light flashes.
I'm reluctant to send ecu for test as fault is so intermittent.
Reading ids code description again.
Ids fault description for p0642 is signal reference voltage vcc1,check Map sensor wiring, and popossible ecu fault.
Im getting reference voltage at map and have tried map sensorppreviously.
Is the code misleading me?
Any furthur suggestions?
Thanks
Joe