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Old 02-23-2004, 04:58 PM   #1
Fubaru
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Default Replacing rear oxygen sensor

Looks like I need to replace the rear O2 sensor on my MY02 WRX
Local dealer wants $207 to do it.

How much labor is it to replace this thing? Is it plug & play with the existing wiring?
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Old 02-23-2004, 05:10 PM   #2
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You can get a new sensor for $117 from www.subaruparts.com. It's easy to replace, just disconnect the plug and unscrew it and replace. If you want to save the $90 then do it yourself.

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Old 02-23-2004, 10:26 PM   #3
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Thanks for the info...

I found these part numbers at that website:

22690 SENSOR ASSEMBLY-OXYGEN 22690AA501
22690 SENSOR ASSEMBLY-OXYGEN 22690AA490
22690 SENSOR ASSEMBLY-OXYGEN 22690AA540
22690 SENSOR ASSEMBLY-OXYGEN 22690AA420


They appear to be the same part. Does anybody know if this is indeed the rear oxygen sensor on the 2002 WRX ?

Last edited by Fubaru; 02-23-2004 at 10:34 PM.
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Old 02-24-2004, 09:23 AM   #4
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Rear O2 sensor..... what's that?
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Old 02-24-2004, 10:28 AM   #5
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Quote:
Originally posted by Fubaru
Thanks for the info...

I found these part numbers at that website:

22690 SENSOR ASSEMBLY-OXYGEN 22690AA501
22690 SENSOR ASSEMBLY-OXYGEN 22690AA490
22690 SENSOR ASSEMBLY-OXYGEN 22690AA540
22690 SENSOR ASSEMBLY-OXYGEN 22690AA420


They appear to be the same part. Does anybody know if this is indeed the rear oxygen sensor on the 2002 WRX ?
If you look to the right of the line items on the site, it tells you what it fits. http://www.subaruparts.com/diag/?mod...category=440-1 If you have a manual, then get the MT.205 part. If you have auto, then get the WRX.AT.205. The one for 251 is for a 2.5 liter engine either in the 2.5RS or STi.

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Old 02-24-2004, 11:03 AM   #6
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Check your warranty; it might be covered by the emmissions control warranty.
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Old 02-24-2004, 12:15 PM   #7
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The O2 sensors are part of the emissions control and should be covered to~80,000 miles. Check your owners manual. Ed Hayes
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Old 02-24-2004, 03:39 PM   #8
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I will check into the warranty coverage.

I might be out of luck since I have replaced the entire exhaust except for the muffler - uppipe, downpipe, midpipe.

The rear O2 sensor that apparently went bad on my car is on a Godspeed downpipe.
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Old 11-01-2005, 09:49 PM   #9
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i called a subaru dealer in my area today and they said the o2 sensors are only covered under the 36000 mile warranty (might be 30000 i forget). im out of luck too because my rear 02 just went out yesterday.
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Old 11-01-2005, 10:02 PM   #10
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Quote:
Originally Posted by FourStar
i called a subaru dealer in my area today and they said the o2 sensors are only covered under the 36000 mile warranty (might be 30000 i forget). im out of luck too because my rear 02 just went out yesterday.
You do realize that this post is almost 2 years old right?

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Old 11-02-2005, 10:52 PM   #11
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Quote:
Originally Posted by Samurai Jack
Maybe, but it answered the warranty question.
One would assume that after 2 years, the OP would have already found the answer to the question.

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Old 11-02-2005, 11:15 PM   #12
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Maybe, but it answered the warranty question.
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Old 11-03-2005, 12:00 AM   #13
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nope sorry i didn't read the date. but yep the question is now answered
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