Genuine Volkswagen Rabbit Oxygen Sensor

Volkswagen Rabbit Oxygen Sensor Parts and Q&A

• Oxygen Sensor
  06A-906-262-CK
  Q: How to properly service and install oxygen sensors on Volkswagen Rabbit?

  A:

  Since a few of the oxygen sensors are mounted on the Catalytic Converter(s), which contracts during cooling, it may be hard to relax when the engine is cold. To prevent destroying an oxygen sensor or the mounting threads, one should start the engine and run it one or two minutes, and turn it off, being very careful not to burn oneself in the process. Take special care with an oxygen sensor service, because they are permanently capped with a pigtail and an electrical connector which are impossible to get to; bending or crashing them will cause the sensor to be useless. Do not touch the electrical connector or the louvered end of the sensor with grease and dirt and other kinds of contaminants and never apply any form of cleaning solvents on it. Oxygen sensors are very sensitive and therefore do not drop, throw, or handle them roughly and make sure that the silicone boot on the sensor has been properly fitted or there will be a melting and functional problem. Start by taking off the engine cover and then hoist the front of the car and place it on jackstands and lastly take off the lower splash shield that is at the bottom of the engine. Then find the oxygen sensor that is on the upstream side, on four-cylinder engines it is on the far end of the catalyst converter, and on a five-cylinder engine on the end of the exhaust manifold, locate the oxygen sensor, follow the wiring harness to the electrical connector and disconnect it, breaking the sensor harness free of all clips. Unscrew the upstream oxygen sensor with an oxygen sensor socket to fit in tight places and in reinstalling the old sensor, apply anti-seize compound on the thread or in a new sensor, there is already anti-seize compound on the thread. Installation is an opposite of removal but makes sure oxygen sensor is tightened to the required torque. In the case of downstream oxygen sensors, find them in the middle and after the catalyst, follow the lead to the electrical connector and remove it. Unscrew the down stream oxygen sensor but be careful to note that none of the four cylinder timing belt model engines have more than one down stream oxygen sensor as all the rest have two. When re-fitting the old sensor, anti-seize should be put on its threads; with a new sensor this is unnecessary. Once more, installation is the opposite of the removal process, and the oxygen sensor should be tightened to a given torque.