01 986 S oil sending unit purpose?
11-28-2017, 04:46 PM
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01 986 S oil sending unit purpose?
OK so yes I know it gives an oil temp reading when read by the Durametric software, but. Mine is reading -46c so assuming its bad. No easy fix for sure. The whole time I have had the car since new the coolant temp and oil temps have been very close. That said I am not getting a check engine light or even a fault code. Car runs fine. So what I am hopeful some one will know is why we have an oil temp sending unit anyway. Does the ECU use that data for anything at all. I mean I would hope it would trigger a CEL if it got to hot but unsure. Certainly not a CEL at -46c. I will eventually change it out but it is something I just don't want to have to do right now. Again hope someone knows and if there are some tricks all the better right.
11-28-2017, 10:03 PM
#2
Race Director
OK so yes I know it gives an oil temp reading when read by the Durametric software, but. Mine is reading -46c so assuming its bad. No easy fix for sure. The whole time I have had the car since new the coolant temp and oil temps have been very close. That said I am not getting a check engine light or even a fault code. Car runs fine. So what I am hopeful some one will know is why we have an oil temp sending unit anyway. Does the ECU use that data for anything at all. I mean I would hope it would trigger a CEL if it got to hot but unsure. Certainly not a CEL at -46c. I will eventually change it out but it is something I just don't want to have to do right now. Again hope someone knows and if there are some tricks all the better right.
I seem to recall for some OBD2 error codes in some cases the oil temperature being above a certain level is a requirement or the error condition is not checked for.