Well I went out, drove the car hard for 30 minutes to ensure oil is warm (and burn off any condensation) and pulled over. I rebooted I-drive per above (neat trick BTW) and same error. I drover for 20 more minutes and no change.
Any other ideas?
I had the sensor replaced 3 times in my E90. I thought they had this fixed. Why not just put in a dipstick? other ideas?