Oxygen Sensor Location

A-62 (2-B) Injector No.1
A-63 (2-B) Injector No.3
A-64 (2-B) Injector No.5

A-89 (4-B) Heated oxygen sensor (1)

A-90 (2-B) Injector No. 6
A-91 (2-B) Injector No 4
A-92 (2-B) Injector No.2

A-97 (4-B) Heated oxygen sensor (2)
A-100 (4-B) Heated oxygen sensor (4)
A-101 (4) Heated oxygen sensor (3)

ALLDATA Editor's note: In one instance of the image, the manufacturer states "Heated Oxygen Sensor (1)". This same HO2 sensor is also refered to as "Front Bank Upstream Heated Oxygen Sensor" in a second instance of the same image. Typically refering to oxygen sensors as 1/1 or 2/1, the first number refers to the bank and the second to the position. Bank 1 being defined as that bank which holds the #1 Cylinder. This image shows that Fuel Injectors 1,3 and 5 are on the rear bank and Fuel Injectors 2,4 and 6 are on the front bank. One could assume that "Front Bank Upstream Heated Oxygen Sensor" refers to the OBDII designation 2/1.

CAUTION: Verify the sensor in question by its wiring color or pinout.

Heated Oxygen Sensor 1:

(2/1) / Heated Oxygen Sensor 1 / Front Bank Upstream Heated Oxygen Sensor

Heated Oxygen Sensor 2:

(1/1) / Heated Oxygen Sensor 2 / Rear Bank Upstream Heated Oxygen Sensor

Heated Oxygen Sensor 3 & 4:

(1/2) / Heated Oxygen Sensor 3 / Rear Bank Downstream Heated Oxygen Sensor
(2/2) / Heated Oxygen Sensor 4 / Front Bank Downstream Heated Oxygen Sensor