Ford Focus manuals

Ford Focus Service Manual: Heated Oxygen Sensor (HO2S)

Special Tool(s)

Socket, Exhaust Gas Oxygen Sensor 303-476 (T94P-9472-A)

Material
Item Specification
High Temperature Nickel Anti-Seize Lubricant XL-2 ESE-M12A4-A
Penetrating and Lock Lubricant (US); Penetrating Fluid (Canada) XL-1 (US); CXC-51-A (Canada)

Removal and Installation

  1. Disconnect the electrical connector and detach the wiring retainer.

  1. NOTE:

    If necessary, lubricate the sensor threads with penetrating and lock lubricant to assist in removal.

    Using the Exhaust Gas Oxygen Sensor Socket, remove the Heated Oxygen Sensor (HO2S) .

    • Calculate the correct torque wrench setting for the following torque. Refer to the Torque Wrench Adapter Formulas in the Appendix.
    • To install, tighten to 48 Nm (35 lb-ft).

  1. NOTICE: Make sure that the sensor wiring is routed away from hot surfaces and sharp edges or damage to the wiring may occur.

    NOTE:

    Apply a light coat of anti-seize lubricant to the threads of the HO2S .

    NOTE:

    Make sure that the electrical connector locking tab is engaged.

    To install, reverse the removal procedure.
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