FUEL INJECTION (FUEL SYSTEMS)(H4DO) > Front Oxygen (A/F) Sensor
REMOVAL
1. Disconnect the ground cable from battery.

2. Remove the radiator sub fan and fan motor assembly. Radiator Sub Fan and Fan Motor > REMOVAL">
3. Lift up the vehicle.
4. Remove the under cover. Front Under Cover > REMOVAL">
5. Disconnect the front oxygen (A/F) sensor connector, and remove the clip holding the front oxygen (A/F) sensor harness.

(A) | Front oxygen (A/F) sensor connector | (B) | Rear oxygen sensor connector | (C) | Clip |
6. Lower the vehicle.
7. Apply spray-type lubricant to the threaded portion of front oxygen (A/F) sensor, and leave it for one minute or more.
8. Remove the front oxygen (A/F) sensor.
CAUTION:
When removing the front oxygen (A/F) sensor, wait until exhaust pipe cools, otherwise it will damage the exhaust pipe.

Inspection
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Preparation tool
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Removal
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