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Old 04-06-2006, 12:36 AM   #1
chaddeus
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Member#: 56624
Join Date: Mar 2004
Chapter/Region: BAIC
Location: Fremont, CA
Vehicle:
2004 Subaru WRX STi
Blue

Default Front 02 Sensor: 22641AA211

I am getting code P0171 and was suggested that my O2 sensor is the cause of the problem.

So I bought one OEM code 22641AA211 for about $150 to replace it. However, I just checked ebay and they seems to have a lot of 02 sensor available and they cost only $40.

So whats the difference between the normal front o2 sensor and the one sold on ebay or any generic o2 sensor?

- Charles
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Old 04-06-2006, 12:38 AM   #2
-Kevlar-
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splicing is a pain....
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Old 04-06-2006, 02:47 AM   #3
chaddeus
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huh? There are a lot of Subaru specific O2 sensor but not made by Subaru.

- Charles
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Old 04-06-2006, 04:56 AM   #4
-Kevlar-
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if the O2 sensor is $40 bucks, i can almost gaurantee youre going to have to splice some wires. 100 - 150 is around the normal price for a "model specific" O2....
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Old 04-06-2006, 05:49 AM   #5
specialev
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They aren't that bad to splice as long as you are handy with a soldering iron.

If you aren't handy with one, practice makes perfect.
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Old 04-06-2006, 08:11 AM   #6
Mulder
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A $40 sensor from Ebay will not work unless it happens to be the exact Subaru replacement with the same part #. The front 02 sensor on the turbo cars is not a generic type, it is a special semi-wideband.
The cause of the code you are getting needs to be properly investigated with the correct troubleshooting procedures, you shouldn't be blindly replacing parts based on what someone suggested. There are a number of possible causes.
If your car has under 36K it is still covered by the full warranty, unless it has mods that may be causing the problem.
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Old 04-06-2006, 06:30 PM   #7
DrD
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I dunno what's on eBay, but for my previous car, the Bosch replacement, which was $39.99 (vs. over $100 for the Toyota OEM one) had the same connector and flange (it was a bolt on plate, rather than a screw in) as the OEM one - a direct replacement. Since the Bosch lists the WRX one as OEM replacement, and has different part numbers for each location and mt vs. at, I would guess that whatever you pick up on fleabay would work just fine and not require any soldering.

Bosch makes an awful lot of oxygen sensors, and they work well.
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Old 04-06-2006, 07:01 PM   #8
subbyspeed
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Could be the MAF also.
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Old 04-07-2006, 08:51 AM   #9
chaddeus
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Well, I hope it isn't the MAF that is malfunctioning. The dealer said its the front 02 sensor so I guess I'll let them decide

- Charles
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