Secondary HO2S Removal and Installation
Special Tools Required
Image Description/Tool Number
1497951.png O2 Sensor Socket Wrench Snap-on SWR2 or Snap-on YA8875, commercially available
Front Bank (Bank 2)

1. Secondary HO2S - Remove
1.
Disconnect the front secondary HO2S connector (A).
2.
Remove front secondary HO2S (B).

Rear Bank (Bank 1)

1. Secondary HO2S - Remove
1.
Disconnect the rear secondary HO2S connector (A).
2.
Remove rear secondary HO2S (B).

Front Bank (Bank 2)

1. Secondary HO2S - Install
1.
Install front secondary HO2S (A).
2.
Connect the front secondary HO2S connector (B).

Rear Bank (Bank 1)

1. Secondary HO2S - Install
1.
Install rear secondary HO2S (A).
2.
Connect the rear secondary HO2S connector (B).