Ford P0051 OBD-II Trouble Code Definition: P0051 HO2S Heater Control Circuit Low Bank 2 Sensor 1 P0051 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0051 HO2S Heater Control Circuit Low What does the code mean? OBD-ii Code P0051 definition: A P0051 DTC (diagnostic trouble code) definition:the O2 sensor (oxygen sensor) located on Bank 2 in front […]