Hey guys wondering if anyone would be able to help me out here and help diagnose what they would think the issue would be. About a week ago my coolant temp started getting to hot (Normally stays between 180-200 depending on weather/speed/how much I boost), to keep it below 200 I need to blast the heat on full and if I dont it will steadily continue to rise which is out of character for my car(most I have allowed it to rise was 215). A day or two after this started the code P1273 Air Fuel Sensor 1 heater Bank 1 popped up. Not sure if there is a correlation or just coincidence in timing. Just curious as to whether any of you know what could be causing my increase in coolant temp or any idea as to what could be the cause.(BTW I know the coolant temps as I have greddy smart informeter) If mod list is needed I can write it out, just let me know! Thank you in advance.

 

Bump

 

Vehicle has began idling roughly, died in idle as well pretty sure it is one of the below, any ideas as to which?
Defective Oxygen Sensor/Air Fuel Ratio Sensor Heater element(s)
Defective Oxygen Sensor/Air Fuel Ratio Sensor Heater circuit
Defective Engine Coolant Temperature Sensor
Defective sensor wiring and/or circuit problem
Defective Oxygen Sensor/Air Fuel Ratio Sensor Heater Relay or Fuse