The voltage of the oxygen sensor is normal, the normal voltage of the front oxygen and the rear oxygen

How normal is the voltage of the oxygen sensor? I believe many riders have such a question. In fact, we still need to know this normal voltage. After all, we need to combine this data when judging whether the oxygen sensor is working normally. So next, let's talk about the voltage range of the oxygen sensor, I hope this article can help you.

The normal voltage of the oxygen sensor is in the range of 0.1-0.9V, and the general average value is 0.4-0.5V. Secondly, the faster the voltage frequency of the oxygen sensor changes, the better the sensor is. If the voltage is 0v or 1v, or even if it does not change, it means that the oxygen sensor at this time has been seriously aging, and it needs to be replaced with a new one in time.

Then it should be noted that the normal voltage of the front oxygen and the rear oxygen 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 threeYuanThe catalysis has failed.

If the voltage of the oxygen sensor is abnormal (fault), the computer of the electronic fuel injection system cannot obtain accurate information of the oxygen concentration in the exhaust pipe, and thus cannot perform feedback control on the air-fuel ratio. As a result, the fuel consumption of the engine will increase, and the exhaust emissions will also increase. Over time, it is prone to malfunctions such as unstable engine idling, misfire, and surge. Therefore, when the oxygen sensor fails, it must be replaced in time.