What is the normal voltage of Nissan Teana oxygen sensor in 2009?

The normal voltage range of the oxygen sensor is 0. 1-0.9V, and the average voltage of the oxygen sensor is generally below 0.4-0.5V, which is described as 1. The faster the voltage frequency of oxygen sensor changes, the better the sensor is. If the voltage is 0v or 1v or even unchanged, it means that the oxygen sensor has been seriously aged and needs to be replaced in time. 2. The normal voltage of pre-oxidation and post-oxidation is different. Under normal circumstances, the signal of the front oxygen sensor is higher than that of the rear oxygen sensor. If the oxygen concentration data obtained by the front oxygen sensor and the rear oxygen sensor are the same, then the three-way catalysis has failed. 3. If the voltage of the oxygen sensor is abnormal, the computer of the electronic fuel injection system can't get the accurate information of the oxygen concentration in the exhaust pipe, so it can't feed back and control the air-fuel ratio. The fuel consumption of the engine will increase and the exhaust emissions will also increase. Over time, the engine is prone to idle instability, fire, surge and other failures. Therefore, when the oxygen sensor fails, it needs to be replaced in time.