A/F Sensor Replacement

Special Tools Required 

O2 Sensor Wrench Snap-on S6176 or equivalent, commercially available

1. Disconnect the A/F sensor 4P connector (A), then remove the A/F sensor (B).
   Fig 1: A/F Sensor 4P Connector And A/F Sensor With Torque Specification

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