I just changed the engine on my 97 Taurus and now I'm getting two Oxygen Sensor trouble codes, P0136 and P0155. One is for the pre-catalytic converter on one bank and one is for the post-catalytic converter on the other bank. Before I put the new engine in, all the Oxygen Sensors were fine and working. I'm skeptical because what are the odds that both would go simultaneously. I'm thinking that maybe something isn't right with the electrical harness that came with the new engine in which all the sensors plug into. If anyone could let me know what is likely to be the problem I'd be most grateful because something tells me that if I spend $150 on two new sensors that the problem won't just go away.
- posted
17 years ago