Where is the DPFE Sensor located on a 2003 Ford Taurus 3.0 L 24V engine? Husband can't locate it! Can't find diagram for 2003 Taurus.

I have a 2003 tauras as well,Ipluged in a metering tool for the brain box.I had two codes come up p0171,p0174,basicly what it tells ya is you have oxygen streaming into exh aust.I went to my local ford dealer to talk with one of thier service techs and although it pionted to a sensor that didn't mean that was the problem,it could have been about a dozen differnt things.I decided to let them have a go at it bcause the have some more specialized meters that could pin point it a little better then me.As it turned out it was my pcv valve an hose was cracked and i was getting a vaccume leak.I could here it leaking but i couldn't pin point it exactly.I sprayed some carb cleaner around that area and it started to idle a little faster so i new iwas at least close.I hope that helped ya and dont forget to have your fuel filter replaced . Mine was very dirty,gas these days sucks.You should go to your auto parts store and pick up some sea breeze gas additive it helps clean your injectors and lubes a few other things as well as helps with any moister that may be in your tank. Good luck!!! I have a 2003 tauras as well,Ipluged in a metering tool for the brain box.I had two codes come up p0171,p0174,basicly what it tells ya is you have oxygen streaming into exh aust.I went to my local ford dealer to talk with one of thier service techs and although it pionted to a sensor that didn't mean that was the problem,it could have been about a dozen differnt things.I decided to let them have a go at it bcause the have some more specialized meters that could pin point it a little better then me.As it turned out it was my pcv valve an hose was cracked and i was getting a vaccume leak.I could here it leaking but i couldn't pin point it exactly.I sprayed some carb cleaner around that area and it started to idle a little faster so i new iwas at least close.I hope that helped ya and dont forget to have your fuel filter replaced . Mine was very dirty,gas these days sucks.You should go to your auto parts store and pick up some sea breeze gas additive it helps clean your injectors and lubes a few other things as well as helps with any moister that may be in your tank. Good luck!!!