11 78 610 Replacing Oxygen Monitoring Sensors

11 78 610 - Removing and installing/replacing lambda monitor sensors (N12)





Special tools required:
- 11 7 030
- 11 9 150





Warning!
Scalding hazard!

Only perform these tasks after the exhaust system has cooled down.





Necessary preliminary tasks:
- Read fault memory.





Installation Note:
If an oxygen sensor is to be reused, only apply a thin and uniform coat of Never Seez Compound (refer to BMW Parts Service) to thread.

The part of the oxygen monitor sensor which projects into the exhaust system branch (sensor ceramic) must not be cleaned or come into contact with lubricant.





Disconnect plug connection for oxygen monitor sensor.

Release monitor sensor (1) with special tools 11 7 030 and 11 9 150.

Tightening torque: 11 78 1AZ Specifications.





Assemble engine.

Check function of DME.