Removing heated oxygen sensor (HO2S) wiring
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
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.