I have a 2005 Dodge Dakota, 4.7 V8 4x4. The other day I purchased 3/4 of a tank of 91 octane gasoline in order to completely fill my tank. After filling the tank I drove home and the truck sat there overnight. Before and after the fill up the truck ran excellent, however, the next moring driving away from my home the engine began spit , sputter and misfire and bog down when I gave it gas. I believe the gasoline I purchased had water in it, so I had a bottle of heay duty HEET hoping it was a water problem but it appeared not to help.
Using my key I was abale to get the code of PO331 on the odometer, however, from the list of codes I have there is no such code number.
Please advise as to what you believe the problem might be and comments on the code munber.