Heated Oxygen Sensor (Ho2S) Removal/Installation [L3]: 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.

Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION [L3] .)
Disconnect the negative battery cable.
Remove the plug hole cover.
Disconnect the HO2S connector.
Remove in the order indicated in the table.

Fig 1: Heated Oxygen Sensors, Wiring Harness Bracket With Torque Specifications
Courtesy of MAZDA MOTORS CORP.