11 78 510 Remove and install/replace front oxygen sensor
Special tools required:
- 11 7 020
The cable on the front oxygen sensor (1) is black.
The installation location of the front oxygen sensor is before the catalytic converter.
Only perform these tasks after exhaust system has cooled down.
Sheared wiring could cause a short circuit.
When disconnecting plugs and plug connections, do not pull on the cables.
Necessary preliminary work:
- Remove CLEAN AIR PIPE
Removal:
Unclip front oxygen sensor connector (1) from holder.
Unlock and disconnect front oxygen sensor connector (1).
Release cable of front oxygen sensor from bracket inside the marked area.
Slightly bend up heat protection film (1).
Release front oxygen sensor (2) with special tool 11 7 020.
Installation:
Installation note:
If an oxygen sensor is reused, thinly and evenly coat only the thread with Never SEEZ compound Overview of consumables 4.3.
The part of the oxygen control sensor which projects into the exhaust branch (sensor ceramic) must not be cleaned or come into contact with lubricant.
Screw in front oxygen sensor (2) and tighten with special tool 11 7 020.
Tightening torque: 11 78 1AZ .
Properly install heat protection film (1).
Connect front oxygen sensor connector (1) and clip into holder.
Clip front oxygen sensor cable onto holder in the area marked.
Required follow-up work:
- Install CLEAN AIR PIPE
- Check function of DME.