Ford P0001 OBD-II Trouble Code Definition: P0001 Fuel Volume Regulator Control Circuit/Open P0001 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0001 Fuel Volume Regulator Control Circuit/Open What does the code mean? OBD-ii Code P0001 definition: Fuel Volume Regulator Control Circuit/Open is the generic definition for the P0001; however your vehicle’s manufacturer may have a different definition […]