Compression Ignition Addict
Join Date: May 2013
Location: Yeah Right
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Well I don't feel like looking up the codes because I'm tired, but I believe U0100 and U0115 are lost comms with the ECM. Not sure about the SCT, I have the Mini Maxx.
However, the truck may be puking because you over filled the system. I run mine, as do quite a few 6.4 guys, low. The new, updated degas bottles have their marks a bit lower. I think mine is slightly below the bottom line when cold and just about half way between cold and warm when the truck is at temp.
Just like when you replace the coolant in any vehicle, you should also replace the radiator cap. I put on a new STANT cap I picked up for ~$8. They are better than the OEM stock caps. Supposedly the new Ford caps have been updated to work better.
Two things I would suspect being the coolant problem:
1) Needs a new cap/coolant level too high
2) The coolant mixture might not be right.
Make sure you put exactly 3.5-4.0 gallons of coolant in the system. Any less than that and you might be too diluted. Having a bad cap will cause the cooling system to lose pressure. With the pressure too low, the boiling point will also lower and allow the coolant to boil if it's not mixed right.
Regarding the codes, it's probably a loose wire or something that didn't get reconnected. It also might be a bad/frayed wire somewhere in your harness. I'd google all those codes and run through the proper diagnosis of them.
Just my two cents. More information would help, like the driving conditions in which it puked, what the coolant temps are showing while driving, etc...