Apple Hardware Test Error: 4SNS/C0000008:Ts0P--124
My MBA had water damage and it would crash randomly. We were able to back it up before we purchased a replacement logic board on eBay and installed it. Now when we start the MBA the fan runs at 6500rpm and kernel_task runs at 400% - googling suggests this is a sensor problem. Running Apple Hardware Test gave the result in the title - googling suggests that it is a bad temperature sensor in the palm rest. I'm not sure what to do at this point.