The voltage range of the rear oxygen sensor, how normal the voltage of the rear oxygen sensor is

What is the voltage range of the rear oxygen sensor? I believe many friends are not very clear about this. In fact, we still need to know this voltage range. When we judge whether the oxygen sensor is working normally, we need to combine this data. So, today we will talk about the topic of how normal the voltage of the rear oxygen sensor is.

The voltage range of the rear oxygen sensor is within the range of 0.1-0.9V, and the general average value is 0.4-0.5V.This data is mainly used to feed back to the ECU for comparison, so as to ensure that the threeYuanCatalysis works normally. Secondly, if the voltage frequency changes faster, it means that the sensor is better. If the voltage is 0v or 1v, or even if it does not change, it means that the oxygen sensor at this time has deteriorated seriously, and it needs to be replaced with a new one in time.

Then if the voltage of the rear oxygen sensor is abnormal (fault), the ECU will naturally not receive some feedback signals. At this time, the OBD (engine exhaust system) fault light on the car dashboard will light up, and you need to go to the auto repair in time. Shop or 4S shop for repairs. But if only the rear oxygen sensor is damaged, in fact, you don't need to worry too much. It will basically have no effect on the fuel consumption and power of the car, but you can't directly judge the working state of the three-way catalysis.