2015 Chevy Sonic Thermostat/Coolant Issue

[Guthrie]

Thermostat housing started leaking a couple days ago so i got a new thermostat and housing and replaced it. When i started there were no codes. To make it easier, i took off the air pump check/injection valve and air injection pipe. I get done and it wont circulate any coolant and now its throwing codes P0118, P0119, P0597, and P2432. What the hell did i do to this thing?

 

[CrzTyler]

Hard to diagnose anything over the internet. I would first verify that you put the thermostat in the correct orientation. All those codes except the last is related to the engine coolant temperature sensor. I would look to see if it’s unplugged, harness is damaged, or anything in the plug that may cause it not to get a good connection. If you have a multimeter you can look up the spec range and test the sensor, but it may need replaced. For the last code, make sure all your plugs are secure and making good connection.