Oxygen Sensor: Service and Repair

SPECIAL SERVICE TOOL(S) REQUIRED

Description
- Oxygen Sensor Wrench

Tool Number
- 303-476 (T94P-9472-A)

REMOVAL
1. Disconnect battery ground cable.
2. Remove cowl extension and right side of leaf screen.
3. Raise vehicle on hoist.
4. Disconnect engine control sensor wiring from Heated Oxygen Sensors (HO2S). Do not remove harness connectors from the brackets.
5. Remove heated oxygen sensors from exhaust manifolds using Oxygen Sensor Wrench 303-476 (T94P-9472-A).

NOTE: If excessive force is needed to remove a heated oxygen sensor, lubricate with penetrating oil prior to removal.

INSTALLATION
1. Follow removal procedure in reverse order.
2. Apply a coating of anti-seize compound to threads of heated oxygen sensor. Tighten heated oxygen sensors to 34-46 Nm (26-33 lb-ft).