My neighbor's daughter drives a VW Beetle, 2.0L non-turbo engine. It threw a code for the coolant temp sensor, and she drove it like that for a couple of weeks. The neighbor also reports that the car burned/lost 2 qts of oil during that time...is there a relationship between the two or have they just been bad about checking the oil level?
The sensor was replaced a couple of days ago, so at least that's dealt with.