Renault Koleos Service Repair Manual: Oxygen sensors: Removal - Refitting

2TR

Petrol injection

Note: Take care not to damage the heated oxygen sensor.

Scrap any heated oxygen sensors that may have fallen on a hard surface such as a concrete floor.

Replace the oxygen sensor if necessary.

 

Note: Before fitting a new heated oxygen sensor, clean the threading on the exhaust pipe using the cleaner for heated oxygen sensor threading and apply anti-seize lubricant (standard maintenance product).

Never exceed the tightening torque of the heated oxygen sensors.

REMOVAL

I - REMOVAL PREPARATION OPERATION

  • Position the vehicle on a two-post lift .
  • Disconnect the battery.
  • Remove the engine undertray.

II - OPERATION FOR REMOVAL OF PART CONCERNED

1 - UPSTREAM OXYGEN SENSOR (A)

Petrol injection

  • Disconnect the upstream oxygen sensor connector (1) .
  • Unclip the wiring of the upstream oxygen sensor from the heat shield at (2) .
  • Remove the upstream oxygen sensor (A) using the (Mot. 1495-01).

2 - DOWNSTREAM OXYGEN SENSOR (B)

Petrol injection

  • Disconnect the downstream oxygen sensor connector (3) .
  • Unclip the wiring of the oxygen sensor from the heat shield at (4) .
  • Remove the upstream oxygen sensor (B) using the (Mot. 1495-01).

REFITTING

I - REFITTING OPERATION FOR PART CONCERNED

1 - Upstream oxygen sensor (A)

  • Refit the upstream oxygen sensor.
  • Torque tighten the upstream oxygen sensor (50 Nm) using the tool (Mot. 1495-01).
  • Clip the wiring of the upstream oxygen sensor onto the heat shield at (2) .
  • Connect the upstream oxygen sensor connector.

2 - Downstream oxygen sensor (B)

  • Refit the downstream oxygen sensor.
  • Torque tighten the downstream oxygen sensor (50 Nm) using the tool (Mot. 1495-01).
  • Clip the wiring of the downstream oxygen sensor onto the heat shield at (4) .
  • Connect the downstream oxygen sensor connector.

II - FINAL OPERATION.

  • Refit the engine undertray.
  • Connect the battery.
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