Last weekend, I finally got to install my headers on my 99 f-body. I followed a link here to a great post about want o2, egr and air codes to turn off.
2 days later, it throw a few codes I was not sure about...
There are repeated 3 times, once under EPA, once under EPA pending and once under MHC.
P0134 o2s circuit insufficient activity bank 1 sensor 1
P0155 o2s heater performance bank 2 sensor 1
I am assuming these are the front o2s and I did not just miss tuning something out on the back ones.
Any suggestions on what I need to do?
Thanks
Mark