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Home >> Mazda >> 2012 >> 3 s Sport, 2.5L Eng VIN 9, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System [MZR 2.0, MZR 2.5] >> 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 2.0, MZR 2.5] .)
  2. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5] .)
  3. Disconnect the HO2S connector.
  4. Remove the HO2S using the SST  .
    Fig 1: Removing HO2S Using SST - MZR 2.0/MZR 2.5 (Mexico) With Torque Specifications
    G08155406
    Fig 2: Removing HO2S Using SST - MZR 2.5 (Except Mexico) With Torque Specifications
    G08155407
  5. Install in the reverse order of removal.
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