Ford P0781 OBD-II Trouble Code Definition: P0781 1-2 Shift Malfunction P0781 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0781 1-2 Shift What does the code mean? OBD-ii Code P0781 definition: This P0781 code indicates that the 1-2 shift valve in the valve body is locked in the direction of the spring compression. The Transmission Control Module […]