13 62 620 Removing and refitting/replacing nitrogen oxide sensor (N47 D20 O 1 with SCR)

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.

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 front UNDERBODY PROTECTION .
Remove rear UNDERBODY PROTECTION .

Release clamp (1).

Tightening torque 18 31 7AZ .

Detach metering module (2) from the exhaust system and place to one side.

Do not loosen or disconnect pipes.

Fig 1: Identifying Exhaust System Metering Module

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Unlock connector (1) and pull off.

Unfasten screws (2).

Tightening torque 13 62 13AZ .

Fig 2: Identifying Connector And Screws

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Release cable from clips (1).

Fig 3: Identifying Cable Clips

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

Tightening torque 13 62 8AZ .

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

IMPORTANT: When unscrewing the nitrogen oxide sensor take care that the lead is not damaged.

Fig 4: Identifying Exhaust System Nitrogen Oxide Sensor

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After the repair work has been completed:

Use the BMW Diagnosis System to perform the SCR adjustment.

Refer to:

Service function
SCR systems
Carry out activation and adjustments

Installation note:

Check stored error/fault messages.

Clear diagnostic fault entries from fault memory.