Heated Oxygen Sensor Replacement - Bank 1 Sensor 1

Heated Oxygen Sensor Replacement - Bank 1 Sensor 1

Removal Procedure

Notice: Refer to Oxygen Sensor Notice.

Important:
* Bank 1 on the LH2 engine is the right side of the engine while sitting in the driver seat.

* Sensor 1 is the sensor closest to the engine, or farthest forward towards the front of vehicle.

* A special anti-seize compound is used on the oxygen sensor threads. New service sensors should already have the compound applied to the threads. Coat the threads of a reused sensor with anti-seize compound P/N 5613695 or equivalent.




1. Release the lock tab, and disconnect the PCV foul air tube (1) from the PCV orifice fitting on the right camshaft cover. Refer to Crankcase Ventilation Hoses/Pipes Replacement.




2. Separate the bank 1, sensor 1 electrical connector assembly (1) from the fuel rail bracket.
3. Disconnect the oxygen sensor electrical connector from the engine wiring harness connector.




4. Using a small screw driver, remove the electrical connector retainer from the electrical connector.




5. Separate the bank 1, sensor 2 electrical connector assembly (1) from the fuel rail bracket.
6. Disconnect the oxygen sensor electrical connector from the engine wiring harness connector.
7. Remove both oxygen sensor electrical connectors and wires from under the two engine wire harnesses.
8. Raise and support the vehicle. Refer to Vehicle Lifting.




9. Remove the oxygen sensor wire harnesses from the retainer (1) at the rear of the engine.
10. Note the wire routing for reassembly.




11. Gently pull the bank 1 sensor 1 oxygen sensor (2) wire harness and connector down from the engine compartment.
12. Remove the bank 1 sensor 1 oxygen sensor (2) from the exhaust manifold.

Installation Procedure

Notice: Refer to Fastener Notice.




1. Install the bank 1 sensor 1 oxygen sensor (2) to the exhaust manifold.

Tighten the heated oxygen sensor (HO2S) to 42 N.m (31 lb ft).

2. Lower the vehicle.
3. Pull the exhaust sensor electrical connector and wire harness upward to the engine compartment.
4. Route both oxygen sensor electrical connectors and wires under the two engine wire harnesses.
5. Install the electrical connector retainer to the electrical connector.
6. Connect both oxygen sensor electrical connectors to the engine wiring harness connectors.




7. Install both oxygen sensor electrical connector assemblies (1, 2) to the fuel rail brackets.




8. Connect the PCV foul air tube (1) to the PCV orifice fitting on the right camshaft cover.
9. Raise and support the vehicle. Refer to Vehicle Lifting.




10. Install the oxygen sensor wire harnesses to the retainer (1) at the rear of the engine. Ensure that the wire harnesses are secure and away from hot exhaust components.
11. Lower the vehicle.