Originally Posted by focusmachnone
Anyone come across this before. I checked the fuse #18 under the hood and it is good. O2 sensors (there seem to be two bank ones) are new but that doesnt mean one cant be bad. Any thoughts by anyone or has anyone had this problem before?
po135 is your upstream o2 senser not going to closed loop, or not going to closed loop fast enough. You put a new one in, ok Is to the right one? & right part?