Our (new to us) 06 threw a p301-306 code within a day of us bringing it home, turns out it did the same about 3000 miles ago. The service department is saying bas gas is the cause (12 percent ethanol) I am having a bit of trouble with this as the previous owner of the van was maticulus with service and I would venture a guess (though I dont know for sure) that had he been told the gas was bad once, he would change gas. Any other ideas as to causes? The van is runniing smoothly so the dealer ruled out ignition coils and does not see how all 6 injectors could go bad at once. I am just having trovble swallowing the bad gas theory as it seems to me all the vans would have the same issue because 12 perc. ethanol gas is everywhere. Any ideas would be great.