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Home >> Mazda >> 2012 >> 3 Mazdaspeed, 2.3L Eng VIN 4 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System [MZR 2.3 DISI Turbo] >> Heated Oxygen Sensor (Ho2S) Removal/Installation

Heated Oxygen Sensor (Ho2S) Removal/Installation

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. (See BATTERY REMOVAL/INSTALLATION [MZR 2.3 DISI TURBO] .)
  2. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR 2.3 DISI TURBO] .)
  3. Disconnect the HO2S connector.
  4. Remove the HO2S using the SST  .
    Fig 1: HO2S And SST With Torque Specifications
    G08155468
  5. Install in the reverse order of removal.
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