Ford P0499 OBD-II Trouble Code Definition: P0499 Evaporative Emission (EVAP) System Vent Valve Control Circuit High P0499 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0499 Evaporative Emission System Vent Valve Control Circuit High Sorry no other information,Please help us to improve,Any information is appreciated.Thanks. […]