The Best Dodge Dakota Gas Cap Check Engine Light References. Web if your dodge check engine light is on and you get code p0404, your dodge exhaust gas recirculation (egr) valve is operating out of range. After you check to make sure the cap is on tight, clear the engine code and see if it comes back on.
Thanks, lee daffydak geniii 7/27/2004 Web same code, a damn squirrel made a lunch out of a 1/4 inch rubber vapor hose located along side the filler neck on the gas tank. Web if your dodge check engine light is on and you get code p0404, your dodge exhaust gas recirculation (egr) valve is operating out of range.
