[drivemusicnow]

what makes me even more mad, is the fact that it isn't even the O2 sensor that is bad, its the O2 sensor heater circuit, and i'm pretty sure that if i replaced the O2 sensor, the problem would go away, because, its only the heater aspect of the O2 sensor. Is the third one even really that important anywho?/ does it really do anything that changes engine performance?. Also is there anything else that could cause that code to come up??