11 78 510 Replacing oxygen control sensors (N20, N26)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2016 BMW 328i xDrive, 2016 BMW 328d xDrive, 2015 BMW 328i xDrive, 2015 BMW 328d xDrive, and 2014 BMW 328i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 7 030
11 4 260

WARNING: Risk of burning!
Work should only be carried out on an exhaust system that has cooled down.

Installation note:

The threads of new oxygen control sensors are already coated with NEVER SEEZ COMPOUND 4.3.

If an oxygen control sensor is to be reused, apply a thin and even coating of NEVER-SEEZ compound to the thread only.

Sensor ceramics not cleaned and not coated with lubricant.

Necessary preliminary tasks:

Remove ACOUSTIC COVER

Disconnect plug connection on oxygen control sensor (1).

Installation note:

Cable color of oxygen control sensor = black.

Cable color of oxygen monitoring sensor = grey.

Fig 1: Plug Connection Of Monitoring Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: When using special tool 11 4 260, it is essential to reduce the prescribed tightening torque by 3 Nm.

Release oxygen control sensor (2) with special tool 11 4 260.

Tightening torque: 11 78 1AZ .

Fig 2: Releasing Oxygen Control Sensor With Special Tool (11 4 260)

Courtesy of BMW OF NORTH AMERICA, INC.

Reassemble the vehicle.

Check function of DME.