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

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 BMW X5, 2006 BMW X3, 2005 BMW X5, 2005 BMW X3, and 2004 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 7 020

Necessary preliminary tasks:

Read out DME fault memory.

Disconnect plug connection for control sensor.

Fig 1: Removing Control Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Release control sensor with special tool 11 7 020.

Tightening torque: 11 78 1AZ. Refer to ENGINE - TIGHTENING TORQUES .

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.