I am getting a p0303 code. Spark plugs and wires were replaced about 3 months ago along with replacing the computer and a wiring harness. I have a hesitation /stutter when I first start it and sometimes when I first hit the gas. My engine light will go off for a day or 2 and then come back on. Any ideas what I should check? I dont understand why the engine light will periodically go off but it seems it go off sometimes after I get gas?? (Maybe just a pure coincidence)

 

Model year?

 

Im sorry. Its a 2006 Dodge Grand Caravan