V70R AWD L5-2.3L Turbo VIN 52 B5234T6 (1998)
Oxygen Sensor: Locations
HEATED OXYGEN SENSORS (HO2S) FRONT AND REAR:
Bank 1, Sensor 1 (Heated Oxygen Sensor, Front) is located before the catalytic converter.
Bank 1, Sensor 2 (Heated Oxygen Sensor, Rear) is located after the catalytic converter.