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MacBook Pro fan runs even when it is in sleep mode

I updated my mac software to macOS Montery and the fan is running even if he is in sleep modus. Why is it the case?


[Re-Titled by Moderator]

MacBook Pro 15″, 12.6

Posted on Mar 15, 2023 4:41 AM

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Question marked as Top-ranking reply

Posted on Mar 15, 2023 7:04 AM

1 - Restart in Safe Mode. This will perform a Disk Repair, clear cache files and only load Apple Software, extensions and fonts. The boot up will be slow and can take some time - Normal.


2 - Safe Mode will also eliminate Third Party Software, extensions and drivers from loading. It will only load the Minimum amount of Core Apple Processes to allow the the computer to function at a reduced Level of Performance 


3 - Does the issue present in this mode ?


4 - Sometimes a Safe Boot followed by a Normal Boot will just put things right.


5 - If not - there could be something in the main User Account playing up. To further isolate this - Set up users, guests, and groups on Mac. Then log out of the Main User account and log into the dummy account and test again if the issue persists.


6 - If the issue is present in the dummy account - then, this appears to be a System Wide issue on the computer.


After attempting all the above suggestions and still having issues.


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2 replies
Question marked as Top-ranking reply

Mar 15, 2023 7:04 AM in response to Macventilation

1 - Restart in Safe Mode. This will perform a Disk Repair, clear cache files and only load Apple Software, extensions and fonts. The boot up will be slow and can take some time - Normal.


2 - Safe Mode will also eliminate Third Party Software, extensions and drivers from loading. It will only load the Minimum amount of Core Apple Processes to allow the the computer to function at a reduced Level of Performance 


3 - Does the issue present in this mode ?


4 - Sometimes a Safe Boot followed by a Normal Boot will just put things right.


5 - If not - there could be something in the main User Account playing up. To further isolate this - Set up users, guests, and groups on Mac. Then log out of the Main User account and log into the dummy account and test again if the issue persists.


6 - If the issue is present in the dummy account - then, this appears to be a System Wide issue on the computer.


After attempting all the above suggestions and still having issues.


Post back in reply to this posting

MacBook Pro fan runs even when it is in sleep mode

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