Secondary HO2S Replacement

Secondary HO2S Replacement

Special Tools Required

- O2 Sensor Socket Wrench Snap-on SWR2 or O2 Sensor Wrench Snap-on YA8875, commercially available

Front Bank (Bank2)

1. Disconnect the front secondary HO2S 4P connector (A), and remove the harness clamps (B).





2. Raise the vehicle on a lift.

3. Remove the harness clamp (A), then remove the front secondary HO2S (B).





4. Install the parts in the reverse order of removal.

Rear Bank (Bank 1)

1. Raise the vehicle on a lift.

2. Disconnect the rear secondary HO2S 4P connector (A), and remove the harness clamps (B).





3. Remove the rear secondary HO2S (C).

4. Install the parts in the reverse order of removal.