pontiac Workshop Repair Guides

Pontiac Workshop Service and Repair Manuals

Heated Oxygen Sensor Replacement - Bank 1 Sensor 1|Page 3583 > < Heated Oxygen Sensor Replacement - Bank 1 Sensor 1|Page 3581
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Oxygen Sensor: Service and Repair
Heated Oxygen Sensor Replacement - Bank 1 Sensor 2

Heated Oxygen Sensor Replacement - Bank 1 Sensor 2

Special Tools

J 39194-B  Heated Oxygen Sensor Wrench

Removal Procedure

Note:  The heated oxygen sensor (HO2S) may be difficult to remove when engine temperature is less than 48°C (120°F). Excessive force may
damage the threads in the exhaust pipe.

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle   (See: Maintenance/Vehicle Lifting/Service and Repair).
2. Remove the connector position assurance (CPA) retainer (1).
3. Disconnect the HO2S electrical connector (2).

Heated Oxygen Sensor Replacement - Bank 1 Sensor 1|Page 3583 > < Heated Oxygen Sensor Replacement - Bank 1 Sensor 1|Page 3581