Heated Oxygen Sensor Replacement - Bank 1 Sensor 1

Heated Oxygen Sensor Replacement - Bank 1 Sensor 1

Special Tools

J 39194-B Heated Oxygen Sensor Wrench

Removal Procedure

Caution: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution Heated Oxygen Sensor Resistance Learn Reset Caution.




1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement Intake Manifold Cover Replacement.
2. Remove the connector position assurance (CPA) retainer (3).
3. Disconnect the engine wiring harness electrical connector (2) from the heated oxygen sensor (HO2S) electrical connector.
4. Remove the HO2S electrical connector rosebud clip (1) from the ignition coil bracket.





Caution: The oxygen sensor may be difficult to remove when the engine temperature is below 48°C (120°F). Excessive force may damage threads in the exhaust manifold or the exhaust pipe.

5. Remove the HO2S using the J 39194-B .

Installation Procedure





Note: A special anti-seize compound is used on the HO2S threads. The compound consists of graphite suspended in fluid and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New or service sensors will already have the compound applied to the threads. If a sensor is removed from an engine and is to be reinstalled, the threads must have anti-seize compound applied before the reinstallation.

1. Coat the threads of the HO2S with anti-seize compound. Refer to Adhesives, Fluids, Lubricants, and Sealers [1][2]Fuel Delivery and Air Induction.

Caution: Refer to Fastener Caution Fastener Caution.

2. Install the HO2S.

Tighten the sensor to 42 Nm (31 lb ft) using the J 39194-B .




3. Connect the engine wiring harness electrical connector (2) to the HO2S electrical connector.
4. Install the CPA retainer (3).
5. Install the HO2S electrical connector rosebud clip (1) to the ignition coil bracket.
6. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement Intake Manifold Cover Replacement.