update on exhaust issues... can anyone help?

[mn box s]

I don't want to rule that out entirely, mine are Bosche exact replacements oem. I want to say that its probably not my problem. How do I go about testing the resistance I have a expensive fluke that willm do the trick. Was this from your rears or your fronts??? my guess is its from my rears that are not in any pipe currently??? Can anyone else chime in???

[heyjae]

P1115 is the pre-cat, passenger side sensor. The fluke will work in testing resistance. O2 sensor heating code issues seem to be popular. I'm trying resolve mine too.