Diesel Data: Automotive Repair

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 (Bank 2)

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





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

Rear Bank (Bank 1)

1. Disconnect the rear secondary HO2S 4P connector (A), then remove the rear secondary HO2S (B).





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