Oxygen Sensor 03C906262BB,03C906262BG,03C906262AR,03C 906 262 BB for VW,AUDI

Observing the color of the top part of the oxygen sensor to  determine fault :1. Light grey tip: This is the normal color of the oxygen sensor;
2. White tip: Caused by silicon pollution, it is time need to replace the oxygen sensor;
3. Brown tip: Caused by lead pollution, if serious, the oxygen sensor must also be replaced;
4. Black tip: Caused by carbon deposits, after eliminating the engine carbon deposit fault, the carbon deposits on the oxygen sensor can generally be automatically removed.
Oxygen sensor maintenance and replacement.
as everyone knows washing the throttle is a maintenance item . In fact, cleaning the oxygen sensor is more important. After all, the working environment of the oxygen sensor is worse and it is easier got damage, due to it controls fuel injection. The oxygen sensor can be cleaned by soaking in a three-way catalytic converter cleaning agent for 10 minutes, and then blow it dry with a hair dryer.
If the oxygen sensor has failed, please replace it immediately.