Error code 31 (only when temps hit around 40)

[b3none]

I fitted my turbolamik tcu and it's all working perfectly, everything is good with it.

My only issue now is that after the gearbox temperature goes up to around 40 error 31 pops up (oil temp open circuit) and the car falls back to thinking it's at -40 degrees.

Where should I start to look for this issue? Is it mechatronics back out or could it be related to something else?

[Mantas]

Hello, did you figured out ? have same issue but it appears randomly sometimes at 60 temp sometimes doesnt apear

[Jar]

Most often the problem is in PCB assembly. When assembling, you have to be very careful not to get any dirt, which is very easy to get when cutting, and you have to be careful not to get the tin in the wrong place.