11 78 545 Removing and installing/replacing monitor sensor (N14)

Special tools required:

11 7 020

WARNING: Scalding hazard!

Only perform these tasks after the exhaust system has cooled down.

Installation note:

If an oxygen sensor is to be reused, only apply a thin and uniform coat of Never Seez Compound to thread.

The part of the oxygen monitor sensor which projects into the exhaust system branch (sensor ceramic) must not be cleaned or come into contact with lubricant.

Disconnect plug connection for monitor sensor.

Release monitor sensor (1) with special tool 11 7 020.

Tightening torque 11 78 1AZ

Fig 1: Monitor Sensor And Special Tool (11 7 020)

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check function of DME.