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O2 sensor bank1 sensor 1 where is it located on 2004 Dodge Caravan

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  • Dodge Master
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O2 sensor bank1 sensor 1 where is it located on - prev.gif next.gif Oxygen Sensor I think that bank1 sensor1 stands for the upstream o2 sensor vs. the sensor2 which is the downstream o2 sensor. Both the 4 cyl. and 6 cyl. employ 2 o2 sensors.

If you get it wrong, changing both might be a good idea.
Removal & Installation 2.4L Engine NOTE: These engines use 2 heated oxygen sensors.
Upstream HO2S1 To Remove:
NOTE: If the engine temperature is lower than 120 °F (48 °C), the HO2S1 sensor may be difficult to remove. Excessive force could possibly damage the threads in the exhaust manifold.

  1. Disconnect the negative battery cable.
  2. Raise and safely support the vehicle.
  3. Disconnect the electrical connector from the sensor.
  4. Using an oxygen sensor removal tool carefully remove the heated oxygen sensor.
To Install:
  1. Clean the threads in the exhaust manifold with an 18 mm X 1.5 + 6E tap.
  2. If reusing the original sensor, coat the sensor threads with an anti-seize compound. New sensors come treated with anti-seize compound on the threads and do not require an additional coating.
  3. Install and tighten the sensor 20 ft. lbs. (27 Nm).
  4. Connect the electrical connector and install the wiring on the bracket.
  5. Lower the vehicle.
  6. Connect the negative battery cable.
Downstream HO2S2 To Remove:
NOTE: If the engine temperature is lower than 120 °F (48 °C), the HO2S 2 sensor may be difficult to remove. Excessive force could possibly damage the threads in the exhaust pipe.
  1. Disconnect the negative battery cable.
  2. Raise and safely support the vehicle.
  3. Disconnect the electrical connector from the oxygen sensor.
  4. Use an oxygen sensor socket to remove the sensor from the catalytic converter.
To Install:
  1. If reusing the original sensor, coat the sensor threads with an anti-seize compound. New sensors come treated with anti-seize compound on the threads and do not require an additional coating.
  2. Install and tighten the sensor 20 ft. lbs. (27 Nm).
  3. Connect the electrical connector to the sensor.
  4. Lower the vehicle.
  5. Connect the negative battery cable.
3.3L & 3.8L Engines NOTE: These engines use 2 heated oxygen sensors.
Upstream HO2S1 To Remove:
NOTE: If the engine temperature is lower than 120 °F (48 °C), the HO2S1 sensor may be difficult to remove. Excessive force could possibly damage the threads in the exhaust manifold.
  1. Remove the battery and battery tray.
  2. Disconnect the speed control vacuum harness from servo.
  3. Remove the cruise control servo and bracket. Place it out of the way.
  4. Disconnect the electrical connector from the oxygen sensor.
  5. Use an oxygen sensor socket to remove the sensor.
To Install:
  1. Clean the threads in the exhaust manifold with an 18 mm X 1.5 + 6E tap.
  2. If reusing the original sensor, coat the sensor threads with an anti-seize compound. New sensors come treated with anti-seize compound on the threads and do not require an additional coating.
  3. Install and tighten the sensor 20 ft. lbs. (27 Nm).
  4. Connect the electrical connector to the sensor and install the sensor on the bracket.
  5. Install the cruise control servo.
  6. Install the battery tray and battery.
Downstream HO2S2 To Remove:
NOTE: If the engine temperature is lower than 120 °F (48 °C), the HO2S 2 sensor may be difficult to remove. Excessive force could possibly damage the threads in the exhaust pipe.
  1. Disconnect the negative battery cable.
  2. Raise and safely support the vehicle.
  3. Disconnect the electrical connector from the oxygen sensor.
  4. Use an oxygen sensor socket to remove the sensor from the catalytic converter.
To Install:
  1. If reusing the original sensor, coat the sensor threads with an anti-seize compound. New sensors come treated with anti-seize compound on the threads and do not require an additional coating.
  2. Install and tighten the sensor 20 ft. lbs. (27 Nm).
  3. Connect the electrical connector to the sensor.
  4. Lower the vehicle.
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Posted on Jul 31, 2010

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