XC90 AWD V8-4.4L VIN 85 B8444S (2005)
Unplug the connector of the front heated oxygen sensor from above. Remove the oxygen sensor using 999 5543 SOCKET NV-22 HO2S See: Tools and
Equipment/999 5543 Socket NV-22 HO2S.
Installation
Note! To ensure that there is no exhaust leakage, see: Flanged joint, assembling See: Engine, Cooling and Exhaust/Exhaust System/Exhaust
Pipe/Service and Repair/Flanged Joint, Assembling.
Installing the front heated oxygen sensor
Install the front heated oxygen sensor using 999 5543 SOCKET NV-22 HO2S See: Tools and Equipment/999 5543 Socket NV-22 HO2S. Tighten as
specified: See Specifications. Plug in the connector of the front heated oxygen sensor. Position the connector in the retainer.
Installing the rear heated oxygen sensor
Install the rear heated oxygen sensor using tool 999 5543 SOCKET NV-22 HO2S See: Tools and Equipment/999 5543 Socket NV-22 HO2S. Tighten as
specified: See Specifications. Plug in the connector of the rear heated oxygen sensor. Position the connector in the retainer.
Installing the lower engine cover
