Question about 2006 Saturn ION

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I have a saturn Ion and need to know where the O2 sensor is located. It is a 2006 4cyl 2.0. I am not sure if it is before the converter or in the rear of the converter.

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There will be an O2 sensor before the catalytic convert and one after the catalytic converter.

On a four cylinder the one before the cat will be Bank 1 Sensor 1. The one after the cat will be Bank 1 Sensor 2.

Do you have a trouble code for an O2 sensor?

Posted on Sep 27, 2010

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1 Answer

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I hope this helps! :) Let me know if you need any further assistance in this matter.

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3 Answers

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One of three (3) possibitlies:
1. Catalytic Converter is malfunctioning.
2. O2 Sensor is malfunctioning. This will be the O2 Sensor located on the Catalytic Converter. However you should check and/or replace both sensors if needed.
3. You have an Exhaust Leak.
In Order of checking:
A. Check and Repair any Exhaust Leak.
B. Replace the O2 Sensor on the Catalytic Converter 1st. Also Known as the Downstream O2 Sensor or HO2 Sensor.
C. Replace the O2 on the Exhaust Manifold prior to the Catalytic Converter. Also Known as the Upstream O2 Sensor.
D. Replace the Catalytic Converter.
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