Codes 1191 & 1192 (95 XJ6)

Tonight, my 95 XJ6’s check engine light came on even though the car runs perfectly. The codes are 1191 and 1192. I could not find much on these codes and what I found is conflicting information. Any help would be greatly appreciated. PS I recently replaced both downstream o2 sensors but not the upstream o2s. Could the upstream o2 sensors be throwing these codes?

Richard

Does’t seem to indicate which one of the four sensors is failing. I’d have to say you probably should at this point. Any of the four sensors could be responsible for this code. Since the downstream sensors do all the heavy lifting, it made sense to change those first.

I’m hoping you didn’t plug the O2 sensors incorrectly, but then I suppose your car would run like crap.