Chosen Solution

Previously I asked for help with an issue on my laptop on this forum. Shortly after buying this laptop used it slowed down, as well the fans spin up to full speed shortly after startup. I ran diagnostics and it returned a result of “SMC issue. with code PFM006”. I then took it to an Apple store and they ran their diagnostics. They didn’t get the SMC error. But they did say there was something wrong with the SSD connector. The suggested solution was to replace the logic board. And so I just did that. However I am getting the exact same behaviour. The laptop runs incredibly slowly, and the fans spin up to full speed shortly after startup. And when I run Diagonstics I get the same error of “SMC issue. with code PFM006”. I’m kind of stumped. Both the Apple genius, and suggestions from my other thread led me to replace the logic board. Is there anything else besides the logic board that would cause an SMC issue? My previous thread is found at Temperature sensor locations for 15" 2015 MacBook Pro Thanks All Image of new cable from ifixit

@velvetlounger since you replaced your board, we know it is not your thermal or current/voltage sensor. The error will be on the periphery. I still think since the error can also come up with a failed trackpad cable/connector, to check and replace that. . Nothing to lose at this time….