Lexus GX470 2003-06

Heated Oxygen Sensor

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  1. Disconnect the oxygen sensor connector.
  2.  
  3. Using an ohmmeter, measure the resistance between the terminals +B and HT. Resistance: 11 - 16 ohms at 20°C (68°F)
  4.  
  5. If the resistance is not as specified, replace the sensor. Tighten to 14 ft. lbs. (20 Nm).
  6.  
  7. Reconnect the oxygen sensor connector.
  8.  

 
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