11 78 510 Replacing oxygen control sensor (M52TU / M54 / M56)

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

(for work step number 13 00 002), read out fault memory, clear if necessary.

NOTE: The plug connection must be disconnected before the oxygen control sensor is removed.
If the plug connection separation point is below the cover for the fuel injectors:
If necessary, remove lower section of microfilter housing. Remove cover from fuel injectors.

Unclip oxygen control sensor cable from retainer.

Disconnect plug connection for oxygen control sensor. Release oxygen control sensor with special tool 11 7 020.

Fig 1: Removing Oxygen Control Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

The threads of new oxygen sensors are already coated with Never Seez Compound.

If an oxygen sensor is used again, apply a thin and even coat of Never Seez Compound (refer to BMW Parts Service) to the thread only.

Part of oxygen control sensor which projects into exhaust system branch must not be cleaned or come into contact with lubricant.

Installation:

Secure oxygen control sensor with special tool 11 7 020.

Fig 2: Installing Oxygen Control Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

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

Pay attention to cable routing of oxygen control sensor.