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

WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2006 BMW 325Ci, 2005 BMW 325xi, 2005 BMW 325i, 2005 BMW 325Ci, and 2004 BMW 325xi. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

NOTE: For special tools, refer to ENGINE - SPECIAL TOOLS .

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: Identifying Special Tool 11 7 020

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 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: Identifying Special Tool 11 7 020

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque, refer to 11 78 1AZ in ENGINE - TIGHTENING TORQUES .

Pay attention to cable routing of oxygen control sensor.