Ford P0731 OBD-II Trouble Code Definition: P0731 Gear 1 Incorrect Ratio P0731 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0731 Gear 1 Incorrect Ratio What does the code mean? OBD-ii Code P0731 definition: This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by Transmission Control Module (TCM) as follows: Torque converter […]