I’m getting a P2184 code again, so I’m going to pull the sensor and test that it’s working still.

Can someone point me to its location? It’s the ECT sensor #2.

 

Here you go:

 

Update: I checked the coolant expansion tank level, and noticed that it was below the min level line. I topped it off with orange 50-50, cleared the code, and then drove it for about 30 mins. The CEL didn’t illuminate again. The DTC app I use still has the P2183 code as a permanent code, and the note says the car’s ECU will clear it if it determines that the root cause has been fixed.

I’ll report back here if/when the permanent code clears.