Low-speed oxygen health

Nowadays, all cars should be equipped with OBD system, and the post-oxygen is to monitor whether the exhaust gas is qualified. After the waste gas is unqualified, oxygen will give a signal to the computer. In fact, there may be something wrong with the three-way catalyst.

The oxygen sensor is damaged, the fuel consumption of the engine is easy to increase, the exhaust pipe emits black smoke, and the idle speed is unstable. In addition, it is easy to turn off the fire in rainy days, both good and bad, so it must be replaced. Besides, clearing the fault code you said is only a short-term clearing, so that the fault light does not light up. After replacement, you must use a computer to check its working condition. Note that its working voltage is always changing, ranging from 0. 1 to 0.9, otherwise it will be damaged. If there is a decoder, look at the numerical changes.