Avenger 2008

Heated Oxygen Sensor

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Operation



Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009

The Oxygen Sensor is a zirconium dioxide electronic device that measures the proportion of oxygen (O2) content in the exhaust gas. The sensor operates by measuring the difference between the oxygen content in the exhaust gas and the external air, and generates a variable voltage signal as the ratio between the two changes. The function of the oxygen sensor is to monitor the air-fuel ratio of the engine, determine if the mixture is rich or lean, and provide feedback (real-time information) to the Powertrain Control Module (PCM) so that the air-fuel ratio may be automatically adjusted.

Removal & Installation



2.4L Engine
Downstream Oxygen Sensor (1/2)

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009


WARNING
The exhaust manifold, exhaust pipes and catalytic converter(s) become very hot during engine operation. Allow engine to cool before removing oxygen sensor. Failure to allow engine to cool before removal may result in personal injury caused by burns.


CAUTION
When disconnecting sensor electrical connector, do not pull directly on wires going into Oxygen Sensor (O2S). Damage to the oxygen sensor may occur.


NOTE
Use an O2S removal tool for this procedure.

  1. Raise and support vehicle.
  2.  
  3. Disconnect O2S wire harness mounting clips from engine or body, if equipped.
  4.  
  5. Disconnect O2S pigtail harness from engine wiring harness (5).
  6.  
  7. Remove O2S (4) from catalytic converter (3).

    Click image to see an enlarged view

    Fig. Exploded view of Oxygen Sensor (O2S) component locations

  8.  

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009


WARNING
The exhaust manifold, exhaust pipes and catalytic converter(s) become very hot during engine operation. Allow engine to cool before removing oxygen sensor. Failure to allow engine to cool before removal may result in personal injury caused by burns.


CAUTION
When equipped: The Oxygen Sensor (O2S) pigtail harness must be clipped and/or bolted back to their original positions on engine or body to prevent mechanical damage to wiring.


NOTE
Use an O2S removal tool for this procedure.


NOTE
Threads of new oxygen sensors are factory coated with anti-seize compound to aid in removal. DO NOT add any additional anti-seize compound to threads of a new O2S.

  1. Install the O2S (4) to catalytic converter (3). Tighten to 30 ft. lbs. (41 Nm).
  2.  
  3. Connect O2S pigtail harness to engine wiring harness (5).
  4.  
  5. Connect O2S wire harness mounting clips to engine or body, if equipped.
  6.  

Downstream Oxygen Sensor (1/2) And Upstream Oxygen Sensor (1/1)

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009


WARNING
The exhaust manifold, exhaust pipes and catalytic converter(s) become very hot during engine operation. Allow engine to cool before removing oxygen sensor. Failure to allow engine to cool before removal may result in personal injury caused by burns.


CAUTION
When disconnecting sensor electrical connector, do not pull directly on wires going into Oxygen Sensor (O2S). Damage to the oxygen sensor may occur.


NOTE
Use an O2S removal tool for this procedure.

  1. Raise and support vehicle.
  2.  
  3. Disconnect O2S wire harness mounting clips from engine or body, if equipped.
  4.  
  5. Disconnect O2S pigtail harness from engine wiring harness (1).
  6.  
  7. Remove O2S (2) from catalytic converter (4).
  8.  
  9. Disconnect O2S pigtail harness from engine wiring harness (5).
  10.  
  11. Remove O2S (3) from catalytic converter (4).

    Click image to see an enlarged view

    Fig. Downstream oxygen sensor (1/2) and upstream oxygen sensor (1/1)

  12.  

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009


WARNING
The exhaust manifold, exhaust pipes and catalytic converter(s) become very hot during engine operation. Allow engine to cool before removing oxygen sensor. Failure to allow engine to cool before removal may result in personal injury caused by burns.


CAUTION
When Equipped: The oxygen sensor (O2S) pigtail harness must be clipped and/or bolted back to their original positions on engine or body to prevent mechanical damage to wiring.


NOTE
Use an O2S removal tool for this procedure.


NOTE
Threads of new oxygen sensors are factory coated with anti-seize compound to aid in removal. DO NOT add any additional anti-seize compound to threads of a new O2S.

  1. Install O2S (3) to catalytic converter (4).
  2.  
  3. Connect O2S pigtail harness to engine wiring harness (5).
  4.  
  5. Install O2S (2) to catalytic converter (4). Tighten to 30 ft. lbs. (41 Nm).
  6.  
  7. Connect O2S pigtail harness to engine wiring harness (1).
  8.  
  9. Connect O2S wire harness mounting clips to engine or body, if equipped.
  10.  

Downstream Oxygen Sensor (2/2) And Upstream Oxygen Sensor (2/1)

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009

NO GRAPHIC---


WARNING
The exhaust manifold, exhaust pipes and catalytic converter(s) become very hot during engine operation. Allow engine to cool before removing oxygen sensor. Failure to allow engine to cool before removal may result in personal injury caused by burns.


CAUTION
When disconnecting sensor electrical connector, do not pull directly on wires going into Oxygen Sensor (O2S). Damage to the oxygen sensor may occur.


NOTE
Use an O2S removal tool for this procedure.

  1. Raise and support vehicle.
  2.  
  3. Disconnect O2S wire harness mounting clips from engine or body, if equipped.
  4.  
  5. Disconnect O2S pigtail harness from engine wiring harness (1).
  6.  
  7. Remove the O2S (5) from catalytic converter (4).
  8.  
  9. Disconnect O2S pigtail harness from engine wiring harness (2).
  10.  
  11. Remove O2S (3) from catalytic converter (4).
  12.  

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009


WARNING
The exhaust manifold, exhaust pipes and catalytic converter(s) become very hot during engine operation. Allow engine to cool before removing oxygen sensor. Failure to allow engine to cool before removal may result in personal injury caused by burns.


CAUTION
When Equipped: The oxygen sensor (O2S) pigtail harness must be clipped and/or bolted back to their original positions on engine or body to prevent mechanical damage to wiring.


NOTE
Use an O2S removal tool for this procedure.


NOTE
Threads of new oxygen sensors are factory coated with anti-seize compound to aid in removal. DO NOT add any additional anti-seize compound to threads of a new O2S.

  1. Install O2S (3) to catalytic converter (4).
  2.  
  3. Connect O2S pigtail harness to engine wiring harness (2).
  4.  
  5. Install the O2S (2) to catalytic converter (4). Tighten to 30 ft. lbs. (41 Nm).
  6.  
  7. Connect O2S pigtail harness to engine wiring harness (1).
  8.  
  9. Connect O2S wire harness mounting clips to engine or body, if equipped.
  10.  

Upstream Oxygen Sensor (1/1)

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009


WARNING
The exhaust manifold, exhaust pipes and catalytic converter(s) become very hot during engine operation. Allow engine to cool before removing oxygen sensor. Failure to allow engine to cool before removal may result in personal injury caused by burns.


CAUTION
When disconnecting sensor electrical connector, do not pull directly on wires going into Oxygen Sensor (O2S). Damage to the oxygen sensor may occur.


NOTE
Use an O2S removal tool for this procedure.

  1. Raise and support vehicle.
  2.  
  3. Disconnect O2S wire harness mounting clips from engine or body, if equipped.
  4.  
  5. Disconnect O2S pigtail harness from engine wiring harness (6).
  6.  
  7. Remove O2S (2) from exhaust pipe (1).

    Click image to see an enlarged view

    Fig. Exploded view of Oxygen Sensor (O2S) component locations

  8.  

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009


WARNING
The exhaust manifold, exhaust pipes and catalytic converter(s) become very hot during engine operation. Allow engine to cool before removing oxygen sensor. Failure to allow engine to cool before removal may result in personal injury caused by burns.


CAUTION
When Equipped: The Oxygen Sensor (O2S) pigtail harness must be clipped and/or bolted back to their original positions on engine or body to prevent mechanical damage to wiring.


NOTE
Use an O2S removal tool for this procedure.


NOTE
Threads of new oxygen sensors are factory coated with anti-seize compound to aid in removal. DO NOT add any additional anti-seize compound to threads of a new O2S.

  1. Install the O2S (2) to exhaust pipe (1). Tighten to 30 ft. lbs. (41 Nm).
  2.  
  3. Connect O2S pigtail harness to engine wiring harness (6).
  4.  
  5. Connect O2S wire harness mounting clips to engine or body, if equipped.
  6.  

Testing



Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009

Refer to the appropriate Diagnostic Trouble Code (DTC) for testing and/or diagnosis procedures.

 
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