Ford P3401 OBD-II Trouble Code Definition: P3401 Cylinder 1 Deactivation/lntake Valve Control Circuit/Open P3401 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P3401 Cylinder 1 Deactivation/lntake Valve Control Circuit/Open Sorry no other information,Please help us to improve,Any information is appreciated.Thanks. […]