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MacBook Air 11"의 2015년 3월 업데이트는 5 세대 Intel Core i5 및 i7 프로세서를 장착하고 배터리 성능이 약간 향상되었습니다.

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SMC Problem Reference Code PFM 006

Fan is running all the time, while the laptop is totally cool and also well aired.

Diagnostics returns with SMC-Problem, Reference Code PFM 006.

SMC reset attempts do not change anything. What can be done?

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Can you give us some more background here. Did you spill something into your system or sit it down on a wet surface? Did you bang it?

Hi Dan, In my case, the computer suffered a drop, from the overhead luggage compartment in a plane. It was in a case, and the computer showed now external damage. It ran for about three hours without a problem, before now. The fan is running fast, but computer is cool. SMC reset doesn't change the situation. Thoughts?

SMC Problem Reference Code PFM 006 - In my case the trackpad got liquid damage introduced to it and needed replacement. Fixed the issue in 2015 A1398 MBP.

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Sounds like you have something running that shouldn't be: Virus, malware, or even spyware! Or the drive is having problems.

At this point I would make a backup of your data files and anything important. You'll need to make a bootable drive to run Disk Utility to make sure you don't have a bad drive. If the drive shows its OK, then you'll need to wipe the drive down and install a fresh copy of the OS.

Once you get to this point you'll need to be careful you don't re-infect your system. Maybe it's a good time to get a good antivirus app and check your backup drive to make sure the files are clean before copying them back on. I would also recommend you make sure the apps you install are from the original source (App Store or original creator of the app. Not off of any free site as some of these are infected.

Lastly make sure your drive has some free space. SSD's need it more so than HD's. My rule of thumb is to leave 1/3 of the drive free if the drive is less than or equal to 256 GB on 512 GB and larger you can reserve 1/4. If your systems RAM is limited to 8 GB you'll need the extra space for virtual RAM more so.

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Dear Dan, No nothing spilled into the laptop and it did not drop or get banged. The worst that happened to it: it got transported several times in a padded back pack on planes and trains.

The story with the fan is lengthy. It started to act up last September but returned to normal after I stopped Drop Box to run all the time. Two weeks later the fan started up again for a month. One night 2/3 through backing up my home directory the fan stopped running again and everything seemed normal (when the fan is going full force start-up is very slow erratic, also the computer is very slow. Activity though is very low). Anyhow the fan then started to act up again about three weeks ago.

I wonder whether there is a fully temperature gauge.

How is this the accepted solution? It's not even close to the solution. This is very likely an SMC issue and nothing to do with software, malware or drive space.

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I have the same issue as this with the same MacBook Air. It occurs whatever I boot from: a clean install or various other USB boot drives that I use regularly that are no trouble and are vanilla installs with no extras at all. With that in mind I think that the issue cannot be related to software.

In fact as I write I have just run Apple Hardware Test (by starting up with the D key pressed) and the fan is still running flat out, and did so through the test apart from a few brief slowdowns while AHT did some particular test.

It does appear to be a hardware-related issue. This one also has had no liquid spilled—though that was good to consider as I have seen MacBook Pro 13" 2011 with liquid spill and they behave just like this one does.

In Activity Monitor the system CPU Load is 70%, big red bar. The kernel_task process is using 270%. The fan is running at 6500 rpm, and the temps are all way down in the 30's.

Update (08/29/2017)

I've done further investigation, and discovered some damage to one of the surface mount devices near the battery connector, so this one is a hardware issue. Not sure whether it is related to liquid though. Picture here: Damage to logic board MacBook Air 2013 11" So I guess this is a power-related issue indeed.

I used Macs Fan Control to check the temps and fan speed.

Guy

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How about downloading TG Pro It should help in isolating a thermal issue which is hardware based. Let us know what you find.

Sorry your image shows corrosion so it did get wet some how.

Your logic board will need repair or you could just replace it. If you have a 4GB model that might make worth it.

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Just letting everyone know that this is usually a case of moisture in the silly places ie the track pad I would be looking for signs of corrosion

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i have this problem and i did spill something around the trackpad. Apple repair talking about a new logic board at £450+ is this the only option?

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Hi guys. First time here. This post was pointing me in the right direction. I had a Macbook pro 15,4 Mid 15 Retina that had also the SMC problem and the PFM006 error code. Fan’s on max and CPU very slow. Freezing mouse etc. Problem solved after I disconnected the battery and the cable to the PCB from the trackpad/heat sensors. When connected them again Macbook was running fine. Thanks for the tip guys (and girls maybe)

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Hi, this place is awesome…

I took my daughter’s Air (mid 2012) to apple store and they told us that the mac have several issues related to a probably damaged logic board… we just got this Mac (from a scam seller…) so we don’t really know if liquid or drop were the issue… hardware test give this same error plus an “power error” and something with the camera. Is it for sure the Logic Board i imagine right? is something physical we can try to see if disconnecting something will “magically” reset something?

Thanks…

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Hi,

I had a similar Problem with a Macbook Air 2015 13”. Kernel Task very high and no Audio.

SMC ErrorPFM 006.

I did an SMC reset, which did not solve the issue. I then disconnected the Battery cable from the Mainboard for 5 min. and reconnected again.

After this everything worked fine again.

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