Hmm, Torque gave me -50.0 C as answer for both.
This is what I have in the .csv:
000_Battery Heater 1 Temperature,Heater Temp1,2105,Signed(X),-40,120,C,7E4
000_Battery Heater 2 Temperature,Heater Temp2,2105,Signed(Y),-40,120,C,7E4
So I would have expected -40.0 C or 0.0 C when the sensors do...