Kia Sportage 2005-06

Heated Oxygen Sensor

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Removal & Installation



  1. Disconnect the electrical connector from the sensor.
  2.  
  3. Remove the oxygen sensor.
  4.  

To install:

  1. Installation is the reverse of the removal procedure.
    NOTE
    Apply anti-seize compound to the threaded portion of the sensor, prior to installation. Never apply anti-seize compound to the protector of the sensor.

  2.  

Operation



The exhaust gas oxygen sensor supplies the electronic control assembly with a signal which indicates either a rich or lean mixture condition, during the engine operation.

Testing



2.7L Engine
Sensor One

Perform a visual inspection of the sensor as follows:

  1. If the sensor tip has a black/sooty deposit, this may indicate a rich fuel mixture.
  2.  
  3. If the sensor tip has a white, gritty deposit, this may indicate an internal coolant leak.
  4.  
  5. If the sensor tip has a brown deposit, this could indicate excessive oil consumption.
  6.  
  7. Warm the engine until the engine reaches operating temperature.
  8.  
  9. Connect the scan tool and monitor sensor operation.
  10.  
  11. Verify that the signal is switching from rich (above 0.45 volt) to lean (below 0.45 volt) a minimum of 3 times in 10 seconds (voltage will vary between 0.1-0.9 volt).
  12.  
  13. If the sensor is operating properly, check for poor connection between the ECM and the component.
  14.  
  15. If not, check the sensor for contamination, deterioration or damage.
  16.  
  17. Substitute the sensor with a known good component, check for proper operation. If problem corrected replace the sensor.
  18.  

Sensor Two

Perform a visual inspection of the sensor as follows:

  1. If the sensor tip has a black/sooty deposit, this may indicate a rich fuel mixture.
  2.  
  3. If the sensor tip has a white, gritty deposit, this may indicate an internal coolant leak.
  4.  
  5. If the sensor tip has a brown deposit, this could indicate excessive oil consumption.
  6.  
  7. Warm the engine until the engine reaches operating temperature.
  8.  
  9. Connect the scan tool and monitor sensor operation.
  10.  
  11. Test condition: engine ON and in idle (closed loop) condition. Specification should be above 0.6 volt.
  12.  
  13. If the sensor is operating properly, check for poor connection between the ECM and the component.
  14.  
  15. If not, check the sensor for contamination, deterioration or damage.
  16.  
  17. Substitute the sensor with a known good component, check for proper operation. If problem corrected replace the sensor.
  18.  

2.0L Engine
Sensor Two

Perform a visual inspection of the sensor as follows:

  1. If the sensor tip has a black/sooty deposit, this may indicate a rich fuel mixture.
  2.  
  3. If the sensor tip has a white, gritty deposit, this may indicate an internal coolant leak.
  4.  
  5. If the sensor tip has a brown deposit, this could indicate excessive oil consumption.
  6.  
  7. Warm the engine until the engine reaches operating temperature. Check that the HO2S signal is active.
  8.  
  9. Connect the scan tool and monitor the -O2 SNSR VOLT.- parameter on the scan tool data list.
  10.  
  11. Test condition should be Engine ON and in idle at closed loop condition. Specification should be above 0.6 volt.
  12.  
  13. If the sensor is operating properly, check for poor connection between the PCM and the component.
  14.  
  15. If not, check the sensor for contamination, deterioration or damage.
  16.  
  17. Substitute the sensor with a known good component, check for proper operation. If problem corrected replace the sensor.
  18.  

Sensor One

Perform a visual inspection of the sensor as follows:

  1. If the sensor tip has a black/sooty deposit, this may indicate a rich fuel mixture.
  2.  
  3. If the sensor tip has a white, gritty deposit, this may indicate an internal coolant leak.
  4.  
  5. If the sensor tip has a brown deposit, this could indicate excessive oil consumption.
  6.  
  7. Warm the engine until the engine reaches operating temperature.
  8.  
  9. Connect the scan tool and monitor sensor operation.
  10.  
  11. Verify that the signal is switching from rich (above 0.45 volt) to lean (below 0.45 volt) a minimum of 3 times in 10 seconds (voltage will vary between 0.1-0.9 volt).
  12.  
  13. If the sensor is operating properly, check for poor connection between the ECM and the component.
  14.  
  15. If not, check the sensor for contamination, deterioration or damage.
  16.  
  17. Substitute the sensor with a known good component, check for proper operation. If problem corrected replace the sensor.
  18.  

 
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