Those codes are a cooling system issue. And from my knowledge, that could be anything from a simple thermostat that is not opening to cracked cylinder heads to bad head gaskets.
How long has it been since the thremostat has been replaced? Personally, I replace mine every 2 years, along with the radiator hoses, but I live in Hell's Courtyard (Phoenix), where severe heat takes a toll on those components.
Fire it up one time when it is cold and check the upper radiator hose to see if it pressurized. If it is, then you have a bad head gasket. This would be a major repair job that although I have done them in the past, I prefer to have a known good mechanic do anymore. You could also do a hydrocarbon check of the current coolant to see if there are combustion gasses in the fluid to confirm a bad head gasket.
I would start with the pressure test on the upper radiator hose first, to see if you have a head gasket problem. If you do, then I would get it repaired ASAP, and not run it between now and then. If not, then I would suspect either collapsing radiator hoses (especially if they are older than about 3-4 years) or a thermostat stuck closed.
Good luck with this, and keep us informed on what you find.