13 62 620 Remove and install or replace the nitrogen oxide sensor before SCR catalytic converter (N57 D30 O/T 1 with SCR)

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WARNING: Risk of burning!
Only perform this repair work on an engine that has cooled down.

Necessary preliminary tasks:

Read out the fault memory of the DDE control unit.
Switch off ignition.
Remove rear UNDERBODY PROTECTION .

Unlock connector (1) and remove.

Unfasten screws (2).

Tightening torque 13 62 12AZ .

Remove control unit (3) for nitrogen oxide sensor.

Fig 1: Identifying Nitrogen Oxide Sensor, Connector And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release cable from clips (1).

Release cable strap (2).

Fig 2: Identifying Cable Strap Clips

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Detach nitrogen oxide sensor (1) and remove from exhaust system.

Tightening torque 13 62 11AZ .

Maneuver out nitrogen oxide sensor and control unit for nitrogen oxide sensor and remove.

Fig 3: Identifying Nitrogen Oxide Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Check stored error/fault messages.

Clear diagnostic fault entries from fault memory.