Chosen Solution

Running ASD on MacBook Air, getting failures on TB1T and TB2T Temperature sensors. Does this require a complete logic board replacement, or is there something less drastic that might fix this?

Your error is battery failure! TB1T - Temperature - Battery TS1 TempTB2T - Temperature - Battery TS2 Temp Time to replace your battery MacBook Air 13" (Late 2010-2017) Battery and here’s the guide MacBook Air 13" Mid 2012 Battery Replacement