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Left fan running but won't increase speed, fan control shows 0rpm

A

andreabellini

macrumors newbie
Original poster
Mar 14, 2019
3
0
So I have this weird issue with my Mid-2014 Macbook Pro 15" (2.8, 16gb ram, dual graphics):

Left fan always shows 0 rpm in various fan control apps. After opening the bottom case, I see the left fan is clearly running idle at minimum, but won’t increase speed after maxing the speed through the app. Apple Diagnostics says there might be an issue with the fan. I’ve tried PRAM and SMC reset without success.

The right side fan works well.

Could it be a damaged fan sensor or else?

Thanks,
Ivan
 
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