I wouldnt worry about that temp code. The factory manual calls for 195 degree stat and a 14-18 PSI Radiator cap. You might disconnet the battery cables for a 1/2 hour and see if that helps to 'erase' the code or the engine temp light, but it wont hurt anything as it is. Glad to hear about your doggie, they mean so much to us, I know mine do. My father fought in WWII,(Pacific Theatre), and Korea. He used to talk of the War in Europe and Churchill giving the Huns Hell!