I just got my WSP y-pipe installed and don't have one of the 02 sensors in now because i couldn't get the old one out and plugged it. It's a special order part so i have to wait a few days for it. My check engine light is on so i figured i'd get the codes off it and reset it.
I got codes 09 01 which is Front Right Htd 02 sensor heater
and 03 04 which is knock sensor, this all makes no sense to me because i'm just missing the front right, rear manifold, 02 sensor. DANNY MARTIN help me. It wasn't on before so why is the knock sensor on too???

 

The lack of one of the sensors could be making the other sensors read out of voltage. It's much too hard to comment until you get the other one in there. Put it in, reset the ecu and see if you still get the error codes.

 

Thats the same O2 sensor i had problems with and it was reading 0303 (Front Heated Oxygen Sensor) 0304 (Knock Sensor), 0210 (running lean) .. i replaced the O2 sensor (closest to the radiator because my mechanic banged it around during y pipe install) and it has been fine ever since

drove over 400 miles since i changed it last friday and its fine..

 

Good that eases some of my concerns, thanks. I just ordered one from ultimate Z for a great price. They were very fast on the response too i highly recomeend them.