Hello and welcome to JustAnswer!
Hard to say really. I'd need to know what codes were stored. Is there a way you can get all of the codes from them and list them here?
Wow, you do have alot going on there don't you?
All the abs codes are probably all related. You might have an abs module that's failing, or is losing a power or ground feed. The key is getting it to act up and diagnose it while it's happening, or spend a few hours going over all of the wiring on the Jeep.
The turbo underboost code is pretty common. I've seen it set when there is no problem, and sometimes when there is a lack of power. I would start by making sure the software in the engine controller is up to date and go from there. I've seen some EGR tubes plugged up causing this, but it's normally accompanied by an EGR flow failure code also.
The water leak can be about anything. Water leaks are a pain to diagnose. The most likely would be a sunroof drain tube problem. Do you have a sunroof?
The drain tubes run from each corner of the sunroof. You'll have to pull the front of the headliner down to get to them. Pull the left one off the sunroof and blow through it to make sure it's clear and you don't hear any whistles indicating a tube that is cracked and leaking water.
There are a couple internal failure codes for the abs module, but they are memory codes. The module will write to it's RAM and recheck what it wrote, and if something isn't right it will set a failure code. Other than that they don't really give you much. When you have as many problems with the system as you are having it points to a possible internal problem or a lost power or ground feed. And yes, finding an intermittent lost power or ground feed is NOT fun!