Replacing Oxygen Control Sensor (Cylinders 1-3)

11 78 511 - Replacing oxygen control sensor (cylinders 1-3)





Special tools required:
- 11 7 020 11 7 020 Socket Wrench Socket WAF 22





Necessary preliminary tasks:
- Read out DME fault memory.





Disconnect plug connection for control sensor.
Release control sensor with special tool 11 7 020 11 7 020 Socket Wrench Socket WAF 22.
Tightening torque: 11 78 1AZ 11 78 Emissions-Control, Lambda Oxygen Sensor.





Installation:
Threads of new control sensors are already coated with Never Seez compound.
If the control sensor is reused, coat only the thread with a thin layer of Never Seez compound (refer to BMW Parts Service).
The control sensor section projecting into the exhaust system branch must not be cleaned or come into contact with lubricant.

Check function of DME.