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Heated Oxygen Sensor: Inspection

  1. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR (Bank 1 Sensor 2) 
    1. Disconnect the sensor connector.
    2. Using an ohmmeter, measure the resistance between the terminals +B and HT.

      Resistance: 

      RESISTANCE CHART

      20°C (68°F) 11 - 16 Ω
      800°C (1,472°F) 23 - 32 Ω
      Fig 1: Measuring Resistance Between Terminals +B And HT
      G04208022Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If the resistance is not as specified, replace the sensor.

      Torque: 20 N.m (200 kgf.cm, 14 ft.lbf) 

    3. Reconnect the sensor connector.
  2. INSPECT OPERATION OF HEATED OXYGEN SENSOR (See  DTC P0136: OXYGEN SENSOR CIRCUIT MALFUNCTION (BANK 1 SENSOR 2)  ) 
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