Originally Posted by Cheetah
This scanner did not show a KR reading or i was not looking in the right spot
Are the sensors replaceable / easy to get to?
You scanned at idle? I wouldn't expect you to have KR at idle. It would read zero. And if a sensor is bad, it should throw a code and a light. They're front and rear on your block, under the cylinder heads, in the water jacket of the cooling system. They listen through the water jacket.
For the record, Series 1 only has one sensor.
As badnit pointed out, not all scantools will read KR.