Fans not running after keyboard replacement ppf003/ppf004

Hi everyone,

after some very mild water damage, 3 of the keys on my Macbook Pro stopped working. I decided to go ahead and buy a replacement keyboard and change it myself. Now, after reassembling, everything works like before; the laptop boots, the keyboard works and everything runs except the fans will not start. I have tried several things:

  • Updated to big sur then reset OS
  • Ran stress test with the result that the CPU reached 100C without the fans starting
  • Reset NVRAM and SMC
  • Installed fan control software and set fans to 100%, still no movement
  • Ran apple diagnostics test with resulting error codes: ppf003/ppf004
  • Disassembled and reassembled again.

I am aware that the fans connect to the motherboard through the keyboard, and that this may be where the issue is, but due to the terrible design of this laptop, I had to glue in the new keyboard, essentially eliminating the possibility of replacing it again.

I am pretty sure the fans worked before I replaced the keyboard.

Are there any other options? Anything I might have missed, or something I can do?

Thanks in advance.

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