[Trust but Verify]

It was my understanding the sensors did not 'go off' indicating excessive heating, they went 'off-line' indicating loss of connectivity.

[mewzilla]

Anything can fail along the signal path, including something called multiplexers and/or signal transmitters. Or whatever cabling was connecting this stuff to the flight computers. We didn't hear about any temp spikes being noted beforehand, at least not yet.