I knew it might be a wiring problem before I replaced the sensor and this seems to be proven now. What I’m trying to understand is why changing bank 2 sensor 2 caused all the same codes to pop up for bank 1 sensor 1.
I had 3 separate codes for the bank 2 sensor 2, P0056, p0060 and p0161 on my 06 Sierra 6L. When I replaced the 02 sensor I immediedly had the p0056 and p0161 codes come back along with p0030 and p0135 for the bank 1sensor1. What happened? Is it possible I blew a fuse?