Ford P0031 OBD-II Trouble Code Definition: P0031 HO2S Heater Control Circuit Low Bank 1 Sensor 1 P0031 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0031 HO2S Heater Control Circuit Low What does the code mean? OBD-ii Code P0031 definition: A P0031 DTC (diagnostic trouble code) definition:the O2 sensor (oxygen sensor) located on Bank 1 in front […]