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Removal - Upstream 1/1, 1/2

  1. Raise and support vehicle.
  2. Disconnect heated oxygen sensor electrical connector (Fig 1 ).
    Fig 1: Identifying Upstream Heated Oxygen Sensor
    G03330083Courtesy of DAIMLERCHRYSLER CORP.
  3. Remove sensor using an oxygen sensor crow foot wrench such as Snap-On tool YA8875 or equivalent.