Well, I changed the lower radiator sensor (#2) and the problems have seemed to go away. I have driven the car now for 4 days and no new codes have come back. I loosened up the sensor and unscrewed it then quickly screwed in the new one, I might have lost 4 oz of antifreeze so it was much easier than draining the entire cooling system and trying to do it from underneath the vehicle was a mess too as there were allot of clips to remove to get the shroud off .There is plenty of room to reach if from the top.
Thanks everyone for your advice , hope my feedback helps someone else.