kernel_task using almost all cpu, fans at full blast.

hey there guys! my macbook recently has started running super slow. after lots of digging, ive realized that kernel_task is using nearly all the CPU power available, making the computer super slow. Ive done a fresh reinstall, updated to the latest firmware, and when I ran the hardware test, i got PFM006, NDC001, PPN001 codes. Ive installed a fan controller after a fresh restart and that got the fans to only go when the cpu rises above normal temps, i also see that all the temps are 30c (normal). no heat when charging, no heat never. my friend did spill water on it so it might be the temp sensor? If so, is there anyway i could disable it with a kext or a command of some sort? thank you so much!