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Home › Mazda › 2009 › 6 i Touring, 2.5 H, Automatic › Repair and Diagnosis › Engine Performance › Engine Control Systems › Engine Control System (L5) › Heated Oxygen Sensor (Ho2S) Removal/Installation [L5]

Heated Oxygen Sensor (Ho2S) Removal/Installation [L5]

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. Disconnect the negative battery cable.
  2. Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION [L5] .)
  3. Disconnect the HO2S connector.
  4. Remove the HO2S using the SST.
  5. Install in the reverse order of removal.
    Fig 1: Heated Oxygen Sensor (HO2S) With Torque Specifications
    G06205250Courtesy of MAZDA MOTORS CORP.
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