Been working on a 97 Sebring 2.5 V6 that has had some issues. First we tuned it up and had to replace the EGR valve, then it was the transmission ECU and now code P0134. So, we replaced the 02 sensor in first bank and also in bank two and still have the code. There is an 02 sensor betweeen the two, however the code keeps saying bank one. I'm at a loss, please help.