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

Special tools required:

11 7 020

WARNING: Risk of burning!
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 (available via BMW/MINI parts catalogue) to thread.

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

Disconnect plug connection for monitoring sensor.

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

Tightening torque 11 78 1AZ .

Fig 1: Releasing Monitoring Sensor With Special Tool (11 7 020)

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check function of DME.