4SNS/1/40000000: TNOP-76.375

I tried Apple Hardware Test to see what kind of test program it is. I was told by the service point that it is the only program to determine hardware faults undoubtedly. No other ways are supported by Apple

First thing I noticed was that the fans run ~3000 rpm at minimum during the testing. So it is impossible to notice any fan speed related issues with Apple Hardware Test.

Second thing that I noticed was the error code "4SNS/1/40000000: TNOP-76.375"
I have no idea what it means and by Googling it or parts of it does not give any more info.

I tried running the hardware test again and it passed successfully. Well who would have guessed that the program itself is a bit sloppy. And we're talking about the program which Apple uses to determine if computer is fully functional.

I'll call tomorrow the service point if they have more info what this error code could mean.