That sounds like the right location which interestingly sounds to be near where your work was performed, so perhaps its wiring.
I've recently been getting this code even though I have new sensors. It may not be the sensor but just faulty wiring.
My Check Engine Light just went off on its own, after it had appeared and I had cleared it. The two times it went on it was raining, so perhaps I'm getting moisture on the wiring.
I guess if the sensor has 70,000 plus miles on it, it can't hurt to replace it. Lots of posts about replacing them,its easy except for another one of the sensors which is the upstream on the firewall side of the engine that can be tougher to reach.
But it seems to me that this sensor going off, since its downstream, is not something that will hurt things if you ride on it. Is the car running fine other than the CEL?
Last edited by Fordowner; 02/16/05 07:30 PM.
