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Mid 2012 model, A1278 / 2.5 GHz i5 or 2.9 GHz i7 processor.

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I received the same exact error code: 4SNS/1/C0000008:Ts0P--124

I'm working on a client's MacBook Pro 13" Late 2011 A1278.

I have the same issue. I removed the MacBookPro8-1.plist file from the original folder to bring the laptop to a usable state, but the fan still runs at 100%. I would say that it is still not running optimally (I have removed 13 malware items, but have not completely cleaned the system up).

I noticed some signs of corrosion (liquid spill) on IR sensor (on one of the ends of the Hard Drive Cable). I received the same exact error code: 4SNS/1/C0000008:Ts0P--124. Troubleshot every cable by disconnecting them, however, you can't remove the keyboard cable (as mentioned in the post above) because the power button is connected to it. Tried SMC PRAM resets, etc. To no avail. Also Temperature Gauge App (Trial) doesn't show any fan issues.

I will attempt to replace the Trackpad and let you know how it goes.

Answer this question I have this problem too

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No, you can but you'll then need to use the power pads on the logic board to turn the system on or off. This is a test not a permanent solution. If the system is stable without the upper case keyboard & trackpad then you know you still have spill damage.

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