Question about 2003 Saturn ION

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Oxygen sensor location on a 2003 Saturn Ion-1

My check engine light came on in my 2003 Saturn Ion-1 and indicated a problem with my oxygen sensor. Where is the oxygen sensor located and is there more than 1? If so, how do I determine which is the bad one?

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  • Anonymous Mar 16, 2014

    changed 1 sensor can not locate the upper sensor need a map of engine to see where the upper oxygen sensor is on the engine



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One is front of the cat, and one after the cat of the exhaust.
The OBD Scanner should tell you which bank is producing the error.
Bank one is the front one.

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Posted on Feb 21, 2009


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Car is reading code P0132

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On a 2003 ion 2.2 litre where is the co2 sensor and is there more then one

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Jan 20, 2011 | 2003 Saturn ION

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My 2003 Kia Optima check engine light keeps coming on. I was told "Bank 1 Sensor 1" needs to be replaced. Where is Bank 1 Sensor 1?

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Jun 23, 2010 | 2003 Kia Optima

1 Answer

How do you change the downstream oxygen sensor in a 2003 saturn ion?

Downstream O2 sensor is the O2 sensor after the Catalytic converter. Jack the car off the ground so you can get under it, disconnect the wire leads and with a close end wrench. Snake the wire leads through and wrench and place the wrench one the O2 sensor and with a hammer, tap the wrench to break lose the O2 sensor from the exhaust pipe. Once the O2 sensor has loosen up, just remove and install the new O2 sensor. Reconnect the wire leads, start the car and listen for any exhaust leaks. Once no leak has been determined, Place car back on the ground and go for test drive. Check engine light should go off after three start up and car has reached it's operating temperature and DTC codes will be erased after 100start cycle. Good luck and be safe.

Jan 11, 2010 | 2003 Saturn ION

2 Answers

Check engine light on my 2003 sienna, DTC was

Oxygen Sensor Connector locations


  1. Disconnect the oxygen sensor connector.
  2. Using an ohmmeter, measure the resistance between the terminals +B and HT. Resistance specification: 11 - 16 ohms at 20°C (68°F).
  3. If the resistance is not as specified, replace the sensor.
  4. Reconnect the oxygen sensor connector.

Oxygen Sensor testing


I really hope helped with this. Remember rated this help, good luck.

Nov 30, 2009 | 2003 Toyota Sienna

1 Answer

How to replace oxygen sencer for 2006 saturn ion

Installation Removal & Installation
  1. Remove the heat shield.
  2. Note the routing of the Heated Oxygen Sensor (HO2S) electrical harness.
  3. Disconnect the HO2S electrical connector.
  4. Using a suitable Oxygen sensor socket remove the sensor.
To install:

NOTE A special anti-seize compound is used on the HO2S threads. The compound consists of a liquid graphite and glass beads. The graphite will burn away but the glass beads will remain, making the sensor easier to remove. New or service sensors already have the compound applied to the threads. If the sensor is removed and is to be reinstalled, the threads must be coated with an anti-seize compound before reinstallation.

  1. If reinstalling the old HO2S, coat the threads with anti-seize compound.
  2. Carefully install the HO2S to the pipe. Tighten the sensor to 22 ft. lbs. (30 Nm) on the sensor located at exhaust manifold, or 30 ft. lbs. (41 Nm) for the rear oxygen sensor.
  3. Attach the sensor electrical connections.

Oct 08, 2009 | 2006 Saturn ION

2 Answers

How many oxygen sensors in a 2001 chrysler sebring 3.0


Fig. Heated Oxygen (HO2S) location (sensor 1)-2.4L engine


Fig. Heated Oxygen (HO2S) location (sensor 2)-2.4L engine


Fig. Heated Oxygen (HO2S) location (bank 1, sensor 2) (bank 2, sensor 2)-2.7L engine


Fig. Heated Oxygen (HO2S) location (bank 2, sensor 1)-2.7L engine

I hope help you with this (rated this help). Good luck.

Sep 09, 2009 | 2001 Chrysler Sebring

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Ned to replace oxygen sensor bank 1 upstream need to know where it is in the car

Up stream O2 sensors are always before the convertor. Check the exhaust manifold, if you have a V6 you may have two, make sure you know which one is bad.

Nov 08, 2008 | 2003 Saturn ION

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