OBDII code P1405 on a 97 Mountaineer
So two weeks ago I took my mountaineer to the dealer for it's 90K service. Along with the regular service they said i had an exhaust leak and I told them to fix it.
Then last week I moved and drove the truck about 600 miles loaded down pretty good with stuff. About halfway through the trip I noticed when I stepped on the gas it would make a kind of clattering noise in time with he acceleration. When I reached my destination, parked the car, and later restarted it, the check engine light came on and has been on ever since.
I took it to Autozone and hooked up the OBD unit and it said it came back with two codes: P1405 and P1405 with a "PD". I know P1405 is "DPFE sensor upstream hose off or plugged". I don't know what the "PD" means. And the noise the car is making could very well be the sound of a slightly unmuffled engine.
I'm guessing that whatever they did to "fix" my exhaust leak they didn't do right. I'm just wondering if anyone knows if this would be an easy fix that I could do myself. More specifically, is this in an easy place to get to. I assume I have to get under the car but I just don't want to have to take a lot apart to get to it. I found another post on here about this specific code but no word on whether this is an easy fix.