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Home › Chevrolet › 2004 › Malibu Base › Repair and Diagnosis › Engine Performance › System › Engine Control System (Introduction) - 2.2L (L61) › Repair Instructions › Heated Oxygen Sensor (HO2S) Replacement (Post-Catalyst) › Removal Procedure

Removal Procedure

    NOTE: Refer to Heated Oxygen Sensor (HO2S) Resistance Learn Reset Notice in Cautions and Notices.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
    2. Fig 1: Disconnecting HO2S Electrical Connector In Engine Compartment
    GM889967Courtesy of GENERAL MOTORS CORP.
  2. Note the routing of the heated oxygen sensor (HO2S) electrical harness (2).
  3. Disconnect the HO2S electrical connector in the engine compartment (1).
    4. Fig 2: Disconnecting HO2S Electrical Connector In Engine Compartment
    GM889722Courtesy of GENERAL MOTORS CORP.
  4. Using the J 39194 carefully remove the HO2S.
    5. NOTE: Refer to Heated Oxygen and Oxygen Sensor Notice in Cautions and Notices.
  5. Lower the HO2S electrical harness away from the underbody (1).
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