820-00138 boots but runs slow, fans 100%

[LCDR2]

Hi

Macbook Pro boots OK able to log in etc.

keyboard and trackpad appear to be functioning OK.
Apple diagnostics says may be issue with SMC (vague I know)
All temps shown via MacFanControl are OK.

So, how would I go about narrowing down the issue to find what sensor or fault is with this mac?

 

[2informaticos]

Try first disconnecting webcam.
Next step, try known good trackpad flex/board.
You can also try disconnecting RIO flex.