Installing heated oxygen sensor (HO2S)

Fig 1: Installing Heated Oxygen Sensor (HO2S)

Courtesy of VOLVO CARS OF NORTH AMERICA.

Install a new seal ring. Apply copper paste (P/N 1161035-9) to the entire thread length.
Tighten heated oxygen sensor (HO2S) to 55 Nm
Place cable upwards
Lower the car for the rear (lower) sensor.