Heated Oxygen Sensor (HO2S) Replacement Bank 1 Sensor 1

HEATED OXYGEN SENSOR (HO2S) REPLACEMENT BANK 1 SENSOR 1

REMOVAL PROCEDURE

NOTE:
- Refer to Oxygen Sensor Notice in Service Precautions.
- Refer to Heated Oxygen Sensor (HO2S) Resistance Learn Reset Notice in Service Precautions.

IMPORTANT:
- Remove oxygen sensors (O2S) with the engine temperature above 48°C (120°F). Otherwise the O2S may be difficult to remove.
- A special anti-seize compound is used on the O2S 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. Raise and support the vehicle. Refer to Vehicle Lifting.
2. Support rear of powertrain frame.
3. Remove 4 rear frame bolts.
4. Lower the frame no more than 76 mm (3 inches).
5. Disconnect the rear O2S electrical connector.
6. Remove the rear O2S from the rear exhaust manifold.

INSTALLATION PROCEDURE




1. Install the rear O2S in the rear exhaust manifold.

NOTE: Refer to Fastener Notice in Service Precautions.

Tighten the rear heated oxygen sensor (HO2S) sensor to 41 N.m (30 lb ft).

2. Connect the rear O2S connector.
3. Raise the frame.
4. Install the 4 rear frame bolts.

Tighten the frame bolts to 100 N.m (74 lb ft).

5. Lower the vehicle and perform a code clear.