The O2 Sensor (HO2S) sends the PCM (Powertrain Control Module) information about the percentage of oxygen in the engine exhaust compared to the oxygen content of the ambient air. This data is used by the PCM to make the necessary adjustments to fuel delivery and ignition timing.
When the Oxygen Sensor is working properly, the proper temperature is reached and it reacts to variations in the oxygen content in the exhaust immediately. In this way, the PCM can control the engine efficiently.
When the P0060 OBDII fault code is set, it indicates that there is a problem in the electrical resistance of the circuit that controls this sensor. This circuit has a resistance of 8 ohms or as close to that value as possible. If there is a 10% variation from that value, this code is stored.