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Home >> Mazda >> 2007 >> 3 i, 2.0 F, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (LF, L3) >> Heated Oxygen Sensor (Ho2S) Removal/Installation >> Notes
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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.
  1. Remove the battery cover.
  2. Disconnect the negative battery cable.
  3. Remove the plug hole cover.
  4. Disconnect the HO2S connector.
  5. Remove in the order indicated in the table.

California emission regulation applicable model 

Fig 1: Heated Oxygen Sensor With Torque Specification (California Emission Regulation Model)
G04955274Courtesy of MAZDA MOTORS CORP.

Except for California emission regulation applicable model 

Fig 2: Heated Oxygen Sensor With Torque Specification (Except For California Emission Regulation Model)
G04955275Courtesy of MAZDA MOTORS CORP.
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