P0942 and TCM

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Jim likes catwalks
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Joined: Sat Apr 15, 2017 10:31 am

P0942 and TCM

Post by Jim likes catwalks » Mon Nov 19, 2018 11:55 pm

Hello wondering if anyone has changed there TCM on the mechatronic unit and eliminated the 942 code. I can clear mine once the transmission warms up above 180 degrees F and sometimes it will stay off (the wrench light and associated limp mode) when I turn engine off and back on but not always. Bought a launch CRP 123 scan tool which reads transmission oil pressures so I was also wondering if anyone knows where to find oil pressure values for this transmission I haven’t been able to locate them yet. Tranny works just fine with wrench light off but always comes on when cold. Apparently the temperature is inferred from the oil pressure and electrical resistance through it which changes with the temperature but I also am not sure where that takes place . Somewhere on TCM I would think. Any info on this would be greatly appreciated thank Jim in B.C.


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