I have a 07 Trail blazer ss that doesnt currently have rear o2s. I change all the codes pertaining to the rear o2s to Do not Report error. Today the light came on for p0161 which is bank 2 sensor 2 o2 circuit code. I went back and looked to make sure its set at Do Not Report and it is so im not sure why only that code would pop up. does any one have any suggestions?
