P0131 0 - 1 --------------- Primary Heated Oxygen Sensor Circuit Low Voltage (Sensor 1)
P0132 0 - 1 --------------- Primary Heated Oxygen Sensor Circuit High Voltage (Sensor 1)

i am getting these two code after my header and test pipe was put on. i already did a anti fouler on the test pipe. went away for a while and now i am getting this two code. can anyone point me the the right direction. so my o2 done? well i search on here and a guy said that he fixed with injector that was cover under warrty. could my injector be going out?

thanks

 

help

 

anyone?

 

Seems like the header O2 is unplugged, or has a broken wire.

It is also possible to plug the rear and front O2 sensors TOGETHER.
Make sure that is not the case.

 

My car is reading these 2 codes as well and sputters bad at 6k rpm wot unless I ease on it then it goes to 9k, what do I do??

 

I also just put a new upstream O2 sensor on and it and that's what it reads this now.