i didn't know i had a flex fuel truck until i had my friend scan the code. Fixizin, i wouldn't call it i time bomb, where you live there's probably a lot of flex 3.0L so it would be easy to find a sensor at a wrecker. i found a thread on the net where someone else was complaining about how much he payed for the sensor, then someone else said they picked one up fo 10$ at the wrecker. it doesn't seem to be that common of a problem for these sensors to go, but even if you change to 1 or 2 in the life of truck, it shouldn't cost too much with wrecker parts.
when i change the sensor, i'll post what was involved. if it's fairly easy to change, i would suggest that everyone find a spare sensor(just in case). my truck died when i was towing my atv, so i drove my atv to get to a phone. i'd hate to see someone get stranded in the middle of nowhere.
unpluging the sensor doesn't work. that was the first thing i tried when the truck died the first time on the side of the road. engine would turn over but not start, pluged the sensor back in and it would start but run like a deisel.
changing the pcm should work but even the wreckers around here want around 200$. i'm just going to always carry a spare sensor. hopefully it's going to be easy to change