Replacing the oxygen monitor sensor

Preliminary work 

• Refer to REMOVING THE ACOUSTIC COVER .
• Refer to REMOVING INTAKE SILENCER HOUSING .
• Refer to REMOVING THE RESONATOR WITH THE TOP CLEAN AIR PIPE .
• Removing the lambda oxygen sensor. Refer to REPLACING THE LAMBDA OXYGEN SENSOR .

Removing the oxygen sensor monitor

Oxygen sensor monitor

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Damage to wires when disconnecting connectors and plug connections.

Sheared wires can cause a short circuit.

• Do not pull on wires when disconnecting connectors and plug connections.

• Detach the cable (1) from the clamps (2).

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• Unlock and disconnect connector (1).

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• Unlock the connector (1) with the screwdriver (2) and detach it off from the carrier plate.

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• Release the monitoring oxygen sensor (1) with the special tools 0 493 751 (11 9 150) and 0 491 075 (11 7 030).
• Remove the oxygen sensor monitor (1).

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  Installing the oxygen sensor monitor

  NOTE: Grease the threads of new oxygen sensors thinly and evenly.
  NOTE: For oxygen sensors that are reused, the following should be observed:
  NOTE: Thinly and evenly grease the oxygen sensor on the thread only. Do not clean the part of the oxygen sensor that does not protrude into the exhaust line (sensor ceramics) and do not grease.
  NOTE: For additional information see: OVERVIEW OF CONSUMABLES (BMW PARTS CATALOGUE) .

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  NOTE: For additional information see: OVERVIEW OF CONSUMABLES (BMW PARTS CATALOGUE) .
  • (1) = Thread
  • (2) = Sensor ceramics
  NOTE: The cable of the oxygen sensor monitor is gray. The installation location of the oxygen sensor monitor is behind the catalytic converter.
  • Screw the oxygen sensor monitor (1) in.
  • Tighten oxygen sensor monitor (1) using special tools 0 493 751 (11 9 150) and 0 491 075 (11 7 030).

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  TIGHTENING TORQUES SPECIFICATION
  
  

  Oxygen sensor monitor on catalytic converter
  M18X1.5	tightening torque	50 Nm

• Connect connector (1) and attach it to the carrier plate.

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• Attach the cable (1) in the clamps (2).

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Follow-up work 

• Installing the lambda oxygen sensor. Refer to REPLACING THE LAMBDA OXYGEN SENSOR .
• Refer to INSTALLING THE RESONATOR WITH THE TOP CLEAN AIR PIPE .
• Refer to INSTALLING INTAKE SILENCER HOUSING .
• Refer to INSTALLING ACOUSTIC COVER .