thanks for the replies. Here are my current specs for Mac Pro 5,1:
dual 3.46 ghz system (x560)
96 GB of Ram
nvidia 1080 ti (macvidcards edition)
1GB Apple PCIe SSD with sintech PCIE Adapter
Do you know where I could download and run ASD?
Thanks again for all of your help.
4SNS mean System sensor problem.
VeAS means V (Voltage), e (PCIe slot), but I don't know the details about AS and those numbers, most likely are the details of the error value (e.g. which slot).
Since it's a sensor. So, not really the logic board failing. If logic board fail, the code should be 4IRP, or 4MLB, etc. But not 4SNS.
However, a sensor failure definitely can report an excessive value which eventually trigger the shutdown protection.
Since not sure which slot has problem and you only need to use two slots for GPU and SSD. I suggest you move the GPU to slot 2 and SSD to slot 4. And see if this can avoid the trouble.
If not, and you have another GPU. I suggest you replace the 1080Ti by a known good GPU. Just in case the flashed / modded 1080Ti's power drawing patten trigger the sensor error.
Anyway, there was no 1080Ti or PCIe SSD back in the AHT written. It's quite normal that AHT consider those unknown value as error (e.g. VeAS may actually means the Voltage sensor on the graphic card, but not really the slot. And the SMC cannot understand 1080Ti's sensor's reading, therefore, consider it as an error).
For Mac Pro 5,1. You need ASD version 3S149. It may be a bit hard to find, but Google should able to help.
Is this a dual CPU model?
Download TGPro and look at Northbridge temperatures.
Perhaps you have a problem with the Northbridge heat sink (common on dual socket systems).
Cannot be Northbridge. 4SNS is sensor's error, even if that's the Northbridge's temperature sensor. The code should be TNxx but not Vexx.
Thanks for the reply. I have two 6 pins to one 8 pin adapter and sata to 6 pin adapter to power 1080 ti card. I have tried using external 500e power supply to power 1080 ti card only. I’m Still getting random shutdowns.
I have replaced power supply for my Mac Pro 5,1. with no luck. Thats why I provided the screenshot of AHT error in this thread to see if anyone can decipher what the error message means.
Someone suggested that I should try ASD, but i dont have it. Does anyone know where i can download and run ASD?
Thanks again for the replies.
So, even though the GPU is at idle, the Mac Pro may still shutdown randomly?