4MOT/4/40000002: Exhaust-0

Question

Level 1

0 points

My fan is making constant, loud buzzing noises. What can be done to fix it?

MacBook Air, OS X El Capitan (10.11), 2012

Posted on Oct 3, 2015 12:47 PM

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Answer 1

Level 10

83,916 points

Choose the method for: “On Mac notebooks with non-removable battery”

If this does not help, contact Apple.

Genius Bar reservation:

Best.

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Answer 2

Level 9

57,305 points

That is an AHT error code indicating that the exhaust fan is malfunctioning. Bring the MBA for service.

Ciao.

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