Welcome to the North American Subaru Impreza Owners Club Friday August 22, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Service & Maintenance

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 04-11-2008, 12:42 PM   #1
sinwagon
Scooby Newbie
 
Member#: 60970
Join Date: May 2004
Location: Rock Hill, SC
Vehicle:
02 WRX wagon
white

Default Oxygen sensor part#/cross reference

I've checked all the websites that have been mentioned in the maint. forum plus a few I found googling "oxygen sensor" and have had a hard time determining which O2 sensor fits my car and where (pre-cat, post). Most web sites will list the Bosch and Denso sensors but not pre/post. Then others are listed as pre/post, but then say they only fit the 2.5. The only sensors I could find that specifically listed as fitting the 02 wrx were the most expensive Bosch and Denso.
I ended up buying a cheap Walker sensor because it said it was pre-cat and fitment was universal. When it came it had a sticker on the box saying it was for the 94+ 2.2l. I don't know if this will also work on my 02 wrx, it has the pig tails which I don't mind splicing. I just don't want to have to pay $150- $200 for the part. If anyone has info on a decent sensor (either plug and play or pigtail) for a decent price, then let me know. I assumed I could find a Bosch or Denso pigtail for around $100 but can't find accurate info for fitment.
Any help would be appreciated. I'm going to attempt installing the Walker this weekend.
* Registered users of the site do not see these ads.
sinwagon is offline   Reply With Quote
Old 04-11-2008, 02:04 PM   #2
strohausii
Scooby Specialist
 
Member#: 26770
Join Date: Oct 2002
Chapter/Region: South East
Location: Tampa
Vehicle:
'02 WRX
midnight black

Default

You do know that sensor plays a very big role in how your engine runs right? Based on the readings from that first O2 sensor and the MAF, you want to do what ever you are doing right.
I'll give ya a bump that someone more knowledgible than I can help you.
strohausii is offline   Reply With Quote
Old 04-11-2008, 02:43 PM   #3
Jon [in CT]
*** Banned ***
 
Member#: 2992
Join Date: Nov 2000
Chapter/Region: NESIC
Location: Connecticut, USA
Vehicle:
02 WRX Sedan
Silver

Default

Quote:
Originally Posted by sinwagon View Post
I ended up buying a cheap Walker sensor because it said it was pre-cat and fitment was universal. When it came it had a sticker on the box saying it was for the 94+ 2.2l. I don't know if this will also work on my 02 wrx, it has the pig tails which I don't mind splicing. I just don't want to have to pay $150- $200 for the part. If anyone has info on a decent sensor (either plug and play or pigtail) for a decent price, then let me know. I assumed I could find a Bosch or Denso pigtail for around $100 but can't find accurate info for fitment.
Any help would be appreciated. I'm going to attempt installing the Walker this weekend.
That sensor won't work as a replacement for your front air/fuel ratio sensor. Return it and buy one of these part numbers, which will work as a replacement for the 2002-5 WRX front AFR sensor.

ACDelco - 213-2843
Airtex - 5S4302
Bosch - 15537
Denso - 234-9011
NGK - 24659
Subaru - 22641AA042
Walker - 250-54004
Jon [in CT] is offline   Reply With Quote
Old 04-11-2008, 05:32 PM   #4
birukun
Scooby Newbie
 
Member#: 52801
Join Date: Jan 2004
Chapter/Region: SCIC
Location: San Diego, CA.
Vehicle:
1999 Legacy Wagon L
Green 30th Anniv.

Default

Is there a published cross reference out there, or can we sticky this information somewhere?

Changing an O2 sensor is not difficult, other than a few gotchas this is a good DIY job.

But.... the information out there regarding O2 sensors and A/F sensors can be nebulous when searching for a replacement part.

If we had a list by Subaru part number and alternates, like Jon [in CT] 's list above, that would be awesome!
birukun is offline   Reply With Quote
Old 04-15-2008, 12:33 PM   #5
sinwagon
Scooby Newbie
 
Member#: 60970
Join Date: May 2004
Location: Rock Hill, SC
Vehicle:
02 WRX wagon
white

Default

Replaced the sensor last weekend with the help of my flex head ratchet and some PB blaster. The Walker looks identical to the Denso OEM sensor. Is the part # for the Walker sensor listed above for a plug and play? I bought the pigtail one and spliced the wires. I now have a CEL but the car seems to be getting better mileage (wait til I finish tank) and is definately running a few hundred rpm's lower at 70 with CC on.
sinwagon is offline   Reply With Quote
Old 04-16-2008, 09:36 AM   #6
Jon [in CT]
*** Banned ***
 
Member#: 2992
Join Date: Nov 2000
Chapter/Region: NESIC
Location: Connecticut, USA
Vehicle:
02 WRX Sedan
Silver

Default

Quote:
Originally Posted by sinwagon View Post
Is the part # for the Walker sensor listed above for a plug and play? I bought the pigtail one and spliced the wires. I now have a CEL ...
It's the part # of the sensor that will actually work without setting a CEL.
Jon [in CT] is offline   Reply With Quote
Old 04-16-2008, 03:24 PM   #7
lancelucas
Scooby Specialist
 
Member#: 124282
Join Date: Aug 2006
Chapter/Region: NWIC
Location: 30000 ft
Vehicle:
04 WRX Wagon PSM
13 STI Sedan SWP

Default

Quote:
Originally Posted by sinwagon View Post
I bought the pigtail one and spliced the wires. I now have a CEL but the car seems to be getting better mileage (wait til I finish tank) and is definately running a few hundred rpm's lower at 70 with CC on.
Wow...you have thought that one out, right?

You need to get a correct O2 sensor in your car ASAP.
lancelucas is offline   Reply With Quote
Old 04-17-2008, 08:59 AM   #8
sinwagon
Scooby Newbie
 
Member#: 60970
Join Date: May 2004
Location: Rock Hill, SC
Vehicle:
02 WRX wagon
white

Default

Got the Denso OEM. Just wish web sites had correct product info instead of getting a surprise when I opened the box.
sinwagon is offline   Reply With Quote
Old 04-23-2008, 10:33 AM   #9
sinwagon
Scooby Newbie
 
Member#: 60970
Join Date: May 2004
Location: Rock Hill, SC
Vehicle:
02 WRX wagon
white

Default

Any info on part #s for the rear sensor?
sinwagon is offline   Reply With Quote
Old 04-23-2008, 05:00 PM   #10
rexman2002
Scooby Specialist
 
Member#: 140244
Join Date: Feb 2007
Chapter/Region: MWSOC
Location: Chicago
Vehicle:
02 bugeye
"stare ale jare"

Default 2002 Wrx

rexman2002 is offline   Reply With Quote
Old 04-23-2008, 05:07 PM   #11
rexman2002
Scooby Specialist
 
Member#: 140244
Join Date: Feb 2007
Chapter/Region: MWSOC
Location: Chicago
Vehicle:
02 bugeye
"stare ale jare"

Default

............

Last edited by rexman2002; 02-08-2010 at 03:47 AM.
rexman2002 is offline   Reply With Quote
Old 04-28-2008, 12:39 PM   #12
sinwagon
Scooby Newbie
 
Member#: 60970
Join Date: May 2004
Location: Rock Hill, SC
Vehicle:
02 WRX wagon
white

Default

Thanks man, it's been a nightmare trying to find correct info from any online parts vendors.
sinwagon is offline   Reply With Quote
Old 04-29-2008, 08:46 AM   #13
Jon [in CT]
*** Banned ***
 
Member#: 2992
Join Date: Nov 2000
Chapter/Region: NESIC
Location: Connecticut, USA
Vehicle:
02 WRX Sedan
Silver

Default

Quote:
Originally Posted by rexman2002 View Post
- sensor in uppipe (front)

22629AA012

http://www.subarupartsforyou.com/cp_...hp?partid=3356
That part number is for the EGT sensor, not the front AFR sensor.
As I stated earlier, the Subaru part number for the front AFR sensor is 22641AA042 (see also http://www.subarupartsforyou.com/cp_...hp?partid=3352).

Last edited by Jon [in CT]; 04-29-2008 at 09:02 AM.
Jon [in CT] is offline   Reply With Quote
Old 09-09-2012, 01:34 PM   #14
XLR8T
Scooby Newbie
 
Member#: 266684
Join Date: Dec 2010
Default

Quote:
Originally Posted by sinwagon View Post
Replaced the sensor last weekend with the help of my flex head ratchet and some PB blaster. The Walker looks identical to the Denso OEM sensor. Is the part # for the Walker sensor listed above for a plug and play? I bought the pigtail one and spliced the wires. I now have a CEL but the car seems to be getting better mileage (wait til I finish tank) and is definately running a few hundred rpm's lower at 70 with CC on.
Careful that that. If your car is going mostly by the MAF and it has not been scaled right via a produne recently... Your car has nothing accurate to calibrate itself by. Measured fuel trims will help, but wull be reset also if you clear your ecu. You could be running dangerously lean especially on high boost...
XLR8T is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
2007 STi Rear Oxygen Sensor ( O2 Sensor ) Nitro Don Engine/Power/Exhaust 3 02-19-2009 11:49 AM
2007 STI Front Oxygen Sensor ( O2 Sensor ) Nitro Don Engine/Power/Exhaust 0 02-13-2009 02:16 PM
oxygen sensor vs air/fuel sensor paintbing Factory 2.0L Turbo Powertrain 21 10-02-2008 01:09 PM
FS: Front oxygen sensor 04 WRX 02 sensor Chino Bling Engine/Power/Exhaust 4 11-20-2007 11:56 PM


All times are GMT -4. The time now is 10:34 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.