My 2017 MacBook Air began having a problem with a high kernel task and high CPU with fans blaring. I did a hardware test and it said there may be an issue with the SMC PFM006, there may be an issue with the power management system PPN001.
After reading online that it may be to do with the track pad's thermal sensor I took the Mac apart and disconnected then reconnected the track pad. I and also cleared the dust of the machine. I did the hardware test again and it was all clear. So I began downloading all the software that I deleted while troubleshooting and during the downloads the problem came back.
It's giving out the same hardware errors again, however now the system seems to run a little smoother, but the fans are still blaring. Any advice?
Best Answer
Change the track pad.
Cleaning things out probably helped improve the efficiency of the cooling but it doesn't fix a faulty sensor. If you hare still getting hardware errors, it means you have a problem with the hardware. Software (hacks) aren't going to solve a physical issue. It's like hearing a noise in your car and installing a louder radio and speakers to cover it up. In the end, the problem is still there.
You're on the right track and you've done good diagnostics, you just have to take it the last mile and do the hardware fix.