oxygen sensor front and rear - Subaru Forester Owners Forum
User Tag List

 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 14 (permalink) Old 07-02-2009, 11:57 PM Thread Starter
Forum Member
 
Join Date: Dec 2008
Location: Lublin, Poland
Posts: 42
Car Year: 04
Car Model: 2.0 XT
Transmission: AT
oxygen sensor front and rear

Hi
I need information which oxygen sensor should i buy for forester 2.5 N/A 2005 US. I would like buy universal replacement if there exists. :)
Can anyone help me??
pmlody is offline  
Sponsored Links
Advertisement
 
post #2 of 14 (permalink) Old 07-03-2009, 06:25 AM
 
Real Lyte's Avatar
 
Join Date: Sep 2007
Location: Southern Tier, NY!
Posts: 3,683
Car Year: 2005
Car Model: Impreza RS Wagon
Transmission: Auto
Quote:
Originally Posted by pmlody View Post
Hi
I need information which oxygen sensor should i buy for forester 2.5 N/A 2005 US. I would like buy universal replacement if there exists. :)
Can anyone help me??
What code did it throw?

05 2.5RS
03 Outback
They live on.
Real Lyte is offline  
post #3 of 14 (permalink) Old 07-03-2009, 06:31 AM Thread Starter
Forum Member
 
Join Date: Dec 2008
Location: Lublin, Poland
Posts: 42
Car Year: 04
Car Model: 2.0 XT
Transmission: AT
P2097 but it isn't oxygen sensor problem. Exhaust gas analysis is correct, so ECU provide correct engine parameters. My question is for future possible needs... :)
pmlody is offline  
post #4 of 14 (permalink) Old 07-03-2009, 06:44 AM
 
Real Lyte's Avatar
 
Join Date: Sep 2007
Location: Southern Tier, NY!
Posts: 3,683
Car Year: 2005
Car Model: Impreza RS Wagon
Transmission: Auto
Quote:
Originally Posted by pmlody View Post
P2097 but it isn't oxygen sensor problem. Exhaust gas analysis is correct, so ECU provide correct engine parameters. My question is for future possible needs... :)
Universal replacements can be a PITA, I wouldn't advise it. Get direct fit (OE fit) from your local parts store instead of the dealer if they cost too much.

05 2.5RS
03 Outback
They live on.
Real Lyte is offline  
post #5 of 14 (permalink) Old 07-03-2009, 08:02 AM
The Modfather
 
Peaty's Avatar
 
Join Date: Jan 2006
Location: Lawrence, KS - Rock Chalk
Posts: 7,492
Car Year: 2010
Car Model: Legacy 3.6R Limited
Transmission: 5EAT
The universal ones,they have them, people have had mixed results using them though. Bosch makes universal sensors you can get at most any local auto store. Getting the OEM part on line is a good idea. I've had luck here too:

2005 Subaru Forester Oxygen Sensor | Drivewire.com

I suggest you get the plug and play one though because sometimes the universal ones end up throwing the code again for some reason.

Peaty

2010 Leg 3.6 R, 2013 OB, 2001 OB, 2001 Forester S and 1999 Miata
Peaty is offline  
post #6 of 14 (permalink) Old 07-03-2009, 08:35 AM
has awakened!
 
2.5x_sleeper's Avatar
 
Join Date: Aug 2007
Location: Newberg, OR
Posts: 20,365
Car Year: 2007
Car Model: Forester Sports XT
Transmission: 4EAT
The front O2 sensor (A/F - Air/Fuel) is critical for correct engine operation, so I would get an OEM/factory replacement for this one. The rear O2 sensor is used to monitor the efficiency of the CAT, so for this one, you could try a universal replacement sensor.

Bobby...

'07 FSXT - COBB Surgeline dyno Protune - Stage 1+
'03 X +AVO turbo kit = XT (son's)
'95 Neon Sport
2.5x_sleeper is offline  
post #7 of 14 (permalink) Old 07-03-2009, 10:22 AM
The Modfather
 
Peaty's Avatar
 
Join Date: Jan 2006
Location: Lawrence, KS - Rock Chalk
Posts: 7,492
Car Year: 2010
Car Model: Legacy 3.6R Limited
Transmission: 5EAT
BTW OEM, at one time at least, was/is Bosch.

Peaty

2010 Leg 3.6 R, 2013 OB, 2001 OB, 2001 Forester S and 1999 Miata
Peaty is offline  
post #8 of 14 (permalink) Old 07-03-2009, 10:39 AM
has awakened!
 
2.5x_sleeper's Avatar
 
Join Date: Aug 2007
Location: Newberg, OR
Posts: 20,365
Car Year: 2007
Car Model: Forester Sports XT
Transmission: 4EAT
^^ By OEM/factory, I referring to the one that you don't have to "wire" yourself, it just plugs in.

Bobby...

'07 FSXT - COBB Surgeline dyno Protune - Stage 1+
'03 X +AVO turbo kit = XT (son's)
'95 Neon Sport
2.5x_sleeper is offline  
post #9 of 14 (permalink) Old 07-06-2009, 02:58 AM Thread Starter
Forum Member
 
Join Date: Dec 2008
Location: Lublin, Poland
Posts: 42
Car Year: 04
Car Model: 2.0 XT
Transmission: AT
Quote:
Originally Posted by Peaty View Post
BTW OEM, at one time at least, was/is Bosch.
I disagree... in my 2005 EJ253 engine OEM sensors are Denso...
Front is wideband and rear is classic but operate in 0.6 - 1.2V probably...
pmlody is offline  
post #10 of 14 (permalink) Old 07-06-2009, 04:52 AM
The Modfather
 
Peaty's Avatar
 
Join Date: Jan 2006
Location: Lawrence, KS - Rock Chalk
Posts: 7,492
Car Year: 2010
Car Model: Legacy 3.6R Limited
Transmission: 5EAT
My 99 RS, 97 Outback and a few others I've pulled out were Bosch which is why I said at one time. Like most auto manufactures they except bids on parts and will change vendors depending on who gives the best price.

Peaty

2010 Leg 3.6 R, 2013 OB, 2001 OB, 2001 Forester S and 1999 Miata
Peaty is offline  
post #11 of 14 (permalink) Old 07-06-2009, 04:56 AM Thread Starter
Forum Member
 
Join Date: Dec 2008
Location: Lublin, Poland
Posts: 42
Car Year: 04
Car Model: 2.0 XT
Transmission: AT
Quote:
Originally Posted by Peaty View Post
My 99 RS, 97 Outback and a few others I've pulled out were Bosch which is why I said at one time. Like most auto manufactures they except bids on parts and will change vendors depending on who gives the best price.
That is true :) And to be true, there is possible to connect bosch sensor insted of denso, only you must pay attension to correct cross wires. They should be in different colors depend on producent. Bosch usually have 2 x white, gray and black wire, denso: 2x black, blue and white.

and this is wiring diagram of different oxygen sensors:


Last edited by pmlody; 07-07-2009 at 01:20 AM.
pmlody is offline  
post #12 of 14 (permalink) Old 07-27-2009, 02:22 AM Thread Starter
Forum Member
 
Join Date: Dec 2008
Location: Lublin, Poland
Posts: 42
Car Year: 04
Car Model: 2.0 XT
Transmission: AT
heh and my front oxygen sensor died... more specyfic: sensor heater...
i decide to buy oem sensor... price is not small - about 120$
pmlody is offline  
post #13 of 14 (permalink) Old 08-19-2009, 11:56 AM
Forum Member
 
Join Date: Jun 2008
Location: Sask. Canada
Posts: 35
Car Year: 2002
Car Model: Forester
Ok, tired of dealing with my (inept, rude, did I mention inept?) dealership. Need to replace my own rear O2 sensor (on an '02, interestingly) and... excuse the newbie idiocy, but are they the same and just go in different spots? Can't be!

The front is the A/F mixer, and the rear 'just' senses response.

I was looking at this site

Discount Car Parts Stuff - Car Accessories & Truck Accessories - Cheap Auto Parts - Car Cover - Floor Mats - Cargo Liner - Subaru Forester Oxygen Sensor Replacement - Subaru Forester Replacement Oxygen Sensor
JFriah is offline  
post #14 of 14 (permalink) Old 08-19-2009, 02:17 PM
The Modfather
 
Peaty's Avatar
 
Join Date: Jan 2006
Location: Lawrence, KS - Rock Chalk
Posts: 7,492
Car Year: 2010
Car Model: Legacy 3.6R Limited
Transmission: 5EAT
No they are not the same or they aren't interchangeable. Do yourself a favor and make it easy on yourself. Get a direct plug in type (be it from AutoZone, Dealer or other) and don't get a Universal one where you have to cut and splice. Spend the extra money and get the plug an play one. I have info on scoobymods on how to change it out.

Peaty

2010 Leg 3.6 R, 2013 OB, 2001 OB, 2001 Forester S and 1999 Miata
Peaty is offline  
Sponsored Links
Advertisement
 
Reply

  Subaru Forester Owners Forum > Technical Forums and Vehicle Assistance > Engine and Exhaust > EJ25 - 2.5L Non-Turbo (1998-2010)

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Subaru Forester Owners Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome