MacBook is super slow, kernel_task above 700% cpu, PMF006 and PPN001
My MacBook Pro (2018 15” Touch Bar) started being super slow suddenly and fans are running at max speed even on a cold start. I quit all running programs and checked the activity monitor, there is a kernel_task using between 700-1000% cpu. I shut down the computer and ran Apple Diagnostics, it gave me the following errors:
''There may be an issue with the System Management Controller (SMC). Reference Code: PFM006''
''There may be an issue with the power management system. Reference Code: PPN001''
I tried resetting SMC but no luck.
I read on this website that some people had that issue after a liquid damage, that reminded me I had a few drops of a liquid on the trackpad last week (literally a few drops).
So I decided to open the computer (first time it is opened, I had never touched anything inside) to look for any liquid damage on the computer. I followed a tutorial on this website to remove the trackpad, and I didn’t find any corrosion on the trackpad nor on the cable between the trackpad and the board. I checked the mother board for any corrosion too but I didn’t find anything either (I really doubt the liquid would have gone to the motherboard anyway, since it was literally a few drops on the bottom left side of the trackpad. Also, I haven’t unscrew the mother board and check on the other side for any liquid damage yet.
So here I am. The computer turns on and load etc, it’s just super slow, fans are running at max speed and the kernel_task is always above 700% cpu…
Has anyone had this issue? Do you think I should unscrew the mother board and check under it even though I doubt the water would have gone so far? Should I replace the trackpad even if it seems to work properly? Are there other sensors I should check? (I believe this issue is due to some sensor not working properly)
Here is a screenshot of TG Pro:
Here is a screenshot of Macs Fan Control:
Here is a screenshot of iStats from the terminal:
I see some sensors with weird values with iStats but I’m not sure if they are really relevant since it shows negative values for cpu core 7 and 8 but I only have a 6-core cpu… Plus, TG Pro and Macs Fan Control seem to show normal temperatures.
Thank you for your help!
Cette question est-elle utile ?