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Nissan Sentra B18 (2020-2025) Service Manual: Heated Oxygen Sensor 2 Heater

Component Inspection

Component Inspection

  1. CHECK HEATED OXYGEN SENSOR 2 HEATER

    1. Turn ignition switch OFF.

    2. Disconnect heated oxygen sensor 2 harness connector.

    3. Check resistance between heated oxygen sensor 2 terminals as follows.

      Heated oxygen sensor 2

      Condition

      Resistance

      +

      −

      Terminal

      4

      3

      Temperature

      25°C (77°F)

      5.4 – 7.3 Ω

      1

      2

      Not existed

      3

      4

      4

      1

      2

    Is the inspection result normal?

    YES >>

    INSPECTION END

    NO >>

    Replace malfunctioning heated oxygen sensor 2.

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