When my MBP (Retina, 13", Early 2015, identifier MacBookPro12,1) is under load, could either be CPU load or "bus-load", ie wifi, usb, webcam etc the CPU System Agent Core
-sensor shows a very high temperature. The SMC-key is either TC0E
or TC0F
(ie Tango Charlie Zero Echo / Foxtrot). With very high temperature I mean 90C+, and I start to get bus errors here.
I believe this is either due to faulty SMC cooling "instructions" or bad application of coolant paste. I'm leaning towards bad application of coolant paste.
Is there any way I could easily check this? I guess I would void warranty by actually opening the MBP?
If you want to test your temperatures compared to mine:
-- At first, get homebrew, see instructions at http://brew.sh
-- after installing run
> brew cask install istat-menus
-- thereafter
-- scan for all sensors
> istats -scan
-- add the two which go high for me to default set
> istats add TC0E
> istats add TC0F
-- check default + added sensors
> istats
Best Answer
Im out and about quite a bit with my mbp. I use a hard shell case from iPearl (search on Amazon... our model is A1502). Its got little legs I can prop up the rear of my mbp, to keep it cooler. Fits well, no issues here, I am typing on it right now.
mbp 13" retina 12,1 blah blah, ~1900 rpm, 35C
As far as CPU System agent core on my mbp, iStat will report it to be 0 at times, then it'll resume back to normal in a sec or two. Let me know if u figure out that one. thx.