I have just finished my b16b swap in my 98 coupe. I am getting a code 41 for o2 sensor heater circuit. Tried swapping with a known good o2 and no luck. Any help?

 

Found out my extension harness was causing the problem. Ran the car with the o2 plugged directly into the harness out of the bung and all was fine. Will running it with the o2 out of the bung cause it to run way rich since it is only seeing air?