Oxygen Sensor: Testing and Inspection

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Heated Oxygen Sensor Resistance Learn Reset Caution

Caution: When replacing the HO2S perform the following:

* A code clear with a scan tool, regardless of whether or not a DTC is set
* HO2S heater resistance learn reset with a scan tool, where available

Perform the above in order to reset the HO2S resistance learned value and avoid possible HO2S failure.