Ford Focus Service Manual: Heated Oxygen Sensor (HO2S)

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

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.