Blue.Oval.Dillon

I was running an off road h-pipe with MIL eliminators and thought I had a leak where the h-pipe met up with the exhaust manifold on the passenger side because I kept getting a check engine light thowing a code for the front O2 sensor on that side. I swapped out the off road h-pipe for the stock h-pipe last night and now I have another check engine light on. I went and got the codes scanned and now it's throwing codes from BOTH of the front O2 sensors. I'm not sure what to do now. Are they both bad? Should I replace both of them? I do have O2 sensor extensions in the front that are currently hooked up that I'm thinking about taking out of the circuit to see if that will fix the problem. But if that doesn't work, does anyone have any other suggestions on what else I can try? Should I try swapping the front and rear O2 sensors and seeing what happens? Should I just replace the front two O2 sensors? Please help.

Thanks.

AJ06GT

Well, first make sure you have the right sensors in the right place. I don't know which colors go where off the top of my head, but you can probably search and find it. After that, I'd assume you just damaged them. Your front sensors don't throw a code for having an O/R pipe because they are before the cats anyway. If they are throwing codes then you damaged them or something else is wrong. Start of with the free solution first though and make sure you have them in the right places.