How to clean the oxygen sensor?

Cleaning method of oxygen sensor: 1, such as cleaning throttle, cleaning three-way catalyst, cleaning engine, etc. These are well-known cleaning and maintenance projects. In fact, it is more important to clean the oxygen sensor. After all, the working environment of oxygen sensor is worse, and it is more likely to be injured, not to mention affecting the fuel injection quantity. For the cleaning of oxygen sensor, we can buy a bottle of oxygen sensor cleaning agent online, as long as tens of dollars; 2. As for the best cleaning, most car owners in the forum will use ferric chloride and hydrochloric acid solution to soak and clean, and the effect is also good; 3. White vinegar, which is also washed with hot white vinegar, is weak in acidity or has a certain decontamination effect, but it is difficult to see the effect if it is suitable for the oxygen sensor to be a little dirty.