Focus L4-2.0L (2009)
Oxygen Sensor: Service and Repair
Heated Oxygen Sensor (HO2S)
Heated Oxygen Sensor (HO2S)
Removal and Installation
1. Disconnect the electrical connector and detach the wiring retainer.
2. 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).
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Calculate the correct torque wrench setting for the following torque.
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To install, tighten to 48 Nm (35 lb-ft).
3. 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.
