Heated Oxygen Sensor (Ho2S) Removal/Installation: Notes

WARNING:

A hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system.

Disconnect the negative battery cable.
Remove the charge air cooler duct. (See INTAKE AIR SYSTEM REMOVAL/INSTALLATION ).
Remove in the order indicated in the table.
Install in the reverse order of removal.

Fig 1: Heated Oxygen Sensor Connector With Torque Specifications
Courtesy of MAZDA MOTORS CORP.