A family member gave me a 13" mid-2015 Macbook Pro that had been water-damaged. Besides the battery being dead, the computer booted up fine. The only two things that don't work are the keyboard and trackpad. However, the keyboard backlighting and power button do work. Running Apple Diagnostics (using an external keyboard), I found a hardware error code PPN001. Apple has quoted this repair at about $900 USD, so I'm trying to see if I can do a repair myself for less.
Would it be possible for me to do the hardware repairs myself (ie: is the logic board still ok), and if so, what parts need replacement?
*Note that I have the skill to do the hardware repairs, I'm just unsure of what repairs are needed. (I miss having GSX access.)