Removing heated oxygen sensor (HO2S) wiring

Fig 1: Removing/Installing Heated Oxygen Sensor (HO2S) Wiring

Courtesy of VOLVO CARS OF NORTH AMERICA.

Remove relay cover and disconnect connector from front (black (2)) or rear (white (1)) heated oxygen sensor (HO2S).

• Undo the cable wiring at the 3 fixing points
• Raise the car for the rear (lower) sensor.