Just waiting on the spacer now to see what that does. If that doesn't work then it will be time to play musical O2 sensors

 

Its worth a shot. I replaced the header sensor and it didnt do anything.

 

CEL spacer didnt work either. WTF

 

try ngk

 

I just might...

 

U need further diagnosis. If u just keep changing parts its gonna get expensive and nothing is gonna get fixed. The diagnostic tool doesnt diagnose the exact problem it just gives u a good general idea where to start hense the the "circiut" not the sensor. I would take it to a good diagnosis tech to spend as little money as possible and get it fixed right the first time.

 

of course it didn't - you have a problem with fron sensor so working on a rear one won't help.

 

That's what I tried saying. Don't be a dang parts exchanger, figure out what's wrong first. It could be as simple as the wiring on the bank 1 o2 sensor, did you check the wiring?

 

Its true, diagnose it first. It might be something simple like a dirty connection. However everytime ive got the heater circuit code in a car it was related to the part of the circuit...in the o2 sensor.

 

We tried to warn you.