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Heated Oxygen Sensor 1 Replacement: Notes

Tools Required 

J 39194-B  Heated Oxygen Sensor Wrench. See Special Tools .

NOTE: 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.
NOTE: Refer to Heated Oxygen and Oxygen Sensor Notice in Cautions and Notices.