Nissan 226A0-EN21A Heated Oxygen Sensor, Rear

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The sensor should not be dropped or roughly handled.

Anti-seize compound should be applied to the threads to ease future removal.

When servicing an oxygen sensor, you should exercise caution to avoid adverse effects on its operation. This includes not removing the permanently attached pigtail and electrical connector, keeping contaminants like grease and dirt away from the electrical connector and the sensor's louvered end, avoiding the use of cleaning solvents on the sensor, preventing rough handling or dropping, and ensuring correct positioning of the silicone boot to prevent melting and ensure proper sensor operation.