Ford P0161 OBD-II Trouble Code Definition: P0161 O2 Sensor Heater Circuit Malfunction Bank 2 Sensor 2 P0161 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0161 O2 Sensor Heater Circuit What does the code mean? OBD-ii Code P0161 definition: It basically means the PCM detected either an excessive current draw, or an open or short in the […]