Released October 2008 / 2.4, 2.53, 2.66, 2.8 or 2.93 GHz Core 2 Duo Processor

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Fans Running at 6200 RPM

Hello there,

I am having a problem with my late 2008 MBP where the fans are always running at 6200RPM. I just ran the AHT and got the following error code.

4SNS/1/40000000: TGOH- 128.000

according to google, it looks as though it just might be a loose connection on a sensor. Anyone have any ideas which this sensor is?

Thanks

Ryan

Answered! View the answer I have this problem too

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Chosen Solution

The cable connecting the temperature sensor from the graphics card to the logic board - on the lower side of the logic board - may not connected properly. Try reseating it.

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Ryan will be eternally grateful.
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