Go-Parts
Cart 0
Your cart is empty
Add an item to see it appear here.

Oxygen Sensor - Center or Downstream (Walker Products) for 2001-2020 Mazda, Saab, Scion, & Subaru NEW

$ 85 .92

Product Notes

Position: Center or Downstream
B1S2
OE Base Sensor
Walker Products Engine Management and Oxygen/Air-Fuel sensors have been engineered and developed to be an Original Equipment Manufacturers replacement for many vehicles worldwide. Every part number is manufactured for the specific application, fitment position on the vehicle, and will provide the relevant diagnostic system feedback as required by the ECU.Newer vehicles will store fault codes in the ECU, some will relate to the affected sensor and its associated systems. A failed sensor might make itself known by causing the engine to run poorly, increase fuel consumption, exhaust emissions, or illuminating a (MIL) malfunction indicator light. The sensor, wiring harness, and connector should also be checked for physical damage. This will most likely also cause their operational life to be shortened.We are an Automotive ISO9001/TS 16949 certified company, with un-paralleled customer service, marketing, and shipping. Our electronic and paper catalogs are designed for today’s fast paced marketplace, along with our eye catching packaging. Since 1946, Walker Products has been the number one choice for the engine management sensors and fuel system components needed for your vehicle. © 2024 Walker Products Inc. All rights reserved.
Brand: Walker Products
Condition: New
LIFE
TIME
Lifetime Warranty Included
This part is backed by our industry-leading lifetime warranty. Shop with total confidence.
100%money-back 120-dayreturns OE-gradequality
Wrenchy the Robot

Meet Wrenchy - The Amazing Parts Assistant!

Voice or type your vehicle details and Wrenchy will confirm fitment in seconds.

Specifications & Info


Attribute Value
CA Prop65 Nickel Warning: This Product Can Expose You To Chemicals, Including Nickel And Nickel Alloyed Stainless Steel, Which Are Known To The State Of California To Cause Cancer Or Birth Defects Or Other Reproductive Harm. Www.p65warnings.ca.gov
Connector Gender Female, Male
Connector Shape Square
Heated Yes
Mounting Type Threaded
Terminal Gender Male
Terminal Quantity 4
Terminal Type Spade
Thread Diameter 18.0
Wire Gauge Measurement 20.0
Wire Quantity 4

Vehicle Fitment Guide

This part fits the following vehicles:

Mazda 2 models (tapclick to expand)(tapclick to hide)
CX-5 2017 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
GS SUV 2017 L4 2.5L AWD/FWD Automatic
GT SUV 2017 L4 2.5L AWD/FWD Automatic
GX SUV 2017 L4 2.0L AWD/FWD Automatic
GX SUV 2017 L4 2.5L AWD/FWD Automatic
Grand Select SUV 2017 L4 2.5L AWD/FWD Automatic
Grand Touring SUV 2017 L4 2.5L AWD/FWD Automatic
I Sport SUV 2017 L4 2.0L FWD Automatic
Sport SUV 2017 L4 2.5L AWD/FWD Automatic
Touring SUV 2017 L4 2.5L AWD/FWD Automatic
i SUV 2017 L4 2.0L FWD Automatic
i Grand Touring SUV 2017 L4 2.0L FWD Automatic
s Grand Touring SUV 2017 L4 2.5L AWD/FWD Automatic
CX-9 2016-2020 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
GS SUV 2016 - 2020 L4 2.5L Turbo AWD Automatic
GS SUV 2016 - 2019 L4 2.5L Turbo FWD Automatic
GS-L SUV 2016 - 2020 L4 2.5L Turbo AWD Automatic
GT SUV 2016 - 2020 L4 2.5L Turbo AWD Automatic
Grand Touring SUV 2016 - 2020 L4 2.5L Turbo AWD/FWD Automatic
I Sport SUV 2017 - 2020 L4 2.5L Turbo FWD Automatic
Signature SUV 2016 - 2020 L4 2.5L Turbo AWD Automatic
Sport SUV 2016 - 2020 L4 2.5L Turbo AWD/FWD Automatic
Touring SUV 2016 - 2020 L4 2.5L Turbo AWD/FWD Automatic
i Grand Touring SUV 2016 - 2020 L4 2.5L Turbo AWD Automatic
Saab 1 model (tapclick to expand)(tapclick to hide)
9-2X 2005-2006 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
2.5i Wagon 2006 H4 2.5L AWD Automatic & Manual
Aero Wagon 2006 H4 2.5L Turbo AWD Automatic & Manual
Aero Wagon 2005 H4 2.0L Turbo AWD Automatic & Manual
Linear Wagon 2005 H4 2.5L AWD Automatic & Manual
Scion 1 model (tapclick to expand)(tapclick to hide)
FR-S 2013-2015 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
Base Coupe 2013 - 2015 H4 2.0L RWD Automatic & Manual
Subaru 5 models (tapclick to expand)(tapclick to hide)
Baja 2004-2006 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
Sport Crew Cab Pickup 2004 - 2006 H4 2.5L AWD Automatic & Manual
Turbo Crew Cab Pickup 2004 - 2006 H4 2.5L Turbo AWD Automatic & Manual
Forester 2005-2010 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
2.5 X SUV 2008 H4 2.5L AWD Automatic & Manual
2.5 XS SUV 2008 H4 2.5L AWD Automatic & Manual
2.5 XS Premium SUV 2008 H4 2.5L AWD Automatic & Manual
2.5 XT SUV 2008 H4 2.5L Turbo AWD Automatic & Manual
Anniversary Edition SUV 2008 H4 2.5L AWD Automatic & Manual
Sports 2.5 X SUV 2008 H4 2.5L AWD Automatic & Manual
Sports 2.5 XT SUV 2008 H4 2.5L Turbo AWD Automatic & Manual
X SUV 2005 - 2010 H4 2.5L AWD Automatic & Manual
X L.L. Bean Edition SUV 2006 - 2008 H4 2.5L AWD Automatic
X Limited SUV 2009 - 2010 H4 2.5L AWD Automatic
X Premium SUV 2009 - 2010 H4 2.5L AWD Automatic & Manual
X Touring SUV 2009 - 2010 H4 2.5L AWD Automatic
X Touring SUV 2009 H4 2.5L AWD Manual
XS SUV 2005, 2007, 2009 - 2010 H4 2.5L AWD Automatic
XS SUV 2005 H4 2.5L AWD Manual
XS L.L. Bean Edition SUV 2005 H4 2.5L AWD Automatic
XSL SUV 2007, 2009 - 2010 H4 2.5L AWD Automatic
XT SUV 2005, 2008 - 2009 H4 2.5L Turbo AWD Automatic
XT SUV 2005 H4 2.5L Turbo AWD Manual
XT Limited SUV 2006 - 2010 H4 2.5L Turbo AWD Automatic
XT Limited SUV 2006 - 2008 H4 2.5L Turbo AWD Manual
XT Premium SUV 2005, 2010 H4 2.5L Turbo AWD Automatic
XT Premium SUV 2005 H4 2.5L Turbo AWD Manual
XT Sports SUV 2010 H4 2.5L Turbo AWD Automatic
Impreza 2002-2014 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
2.0R Sedan 2008 H4 2.0L AWD Automatic
2.5 GT Hatchback 2010 H4 2.5L Turbo AWD Automatic
2.5 GT Sedan 2009 - 2010 H4 2.5L Turbo AWD Automatic
2.5i Hatchback 2008 - 2011 H4 2.5L AWD Automatic & Manual
2.5i Sedan 2006 - 2011 H4 2.5L AWD Automatic & Manual
2.5i Wagon 2006 - 2007 H4 2.5L AWD Automatic & Manual
2.5i Limited Hatchback 2010 H4 2.5L AWD Automatic & Manual
2.5i Limited Sedan 2010 H4 2.5L AWD Automatic & Manual
2.5i Premium Hatchback 2010 - 2011 H4 2.5L AWD Automatic & Manual
2.5i Premium Sedan 2010 - 2011 H4 2.5L AWD Automatic & Manual
Base Hatchback 2012 - 2014 H4 2.0L AWD Automatic CVT & Manual
Base Sedan 2012 - 2014 H4 2.0L AWD Automatic CVT & Manual
I Limited Hatchback 2014 H4 2.0L AWD Automatic CVT
I Limited Sedan 2014 H4 2.0L AWD Automatic CVT
I Sport Hatchback 2014 H4 2.0L AWD Automatic CVT
I Sport Sedan 2013 - 2014 H4 2.0L AWD Automatic CVT
Limited Hatchback 2012 - 2014 H4 2.0L AWD Automatic CVT
Limited Sedan 2012 - 2014 H4 2.0L AWD Automatic CVT
Outback Wagon 2002 - 2004 H4 2.5L AWD Automatic & Manual
Outback Sport Hatchback 2008 - 2011 H4 2.5L AWD Automatic & Manual
Outback Sport Wagon 2005 - 2007 H4 2.5L AWD Automatic & Manual
Premium Hatchback 2012 - 2014 H4 2.0L AWD Automatic CVT & Manual
Premium Sedan 2012 - 2014 H4 2.0L AWD Automatic CVT & Manual
R Hatchback 2011 - 2012 H4 2.0L AWD Automatic CVT
R Hatchback 2009 - 2011 H4 2.0L AWD Automatic & Manual
R Sedan 2011 H4 2.0L AWD Automatic CVT
R Sedan 2009 - 2011 H4 2.0L AWD Automatic & Manual
RS Sedan 2002 - 2005 H4 2.5L AWD Automatic & Manual
RS Wagon 2005 H4 2.5L AWD Automatic & Manual
Sport Hatchback 2012 - 2014 H4 2.0L AWD Automatic CVT
Sport Hatchback 2008 - 2011 H4 2.5L AWD Automatic
Sport Hatchback 2008 - 2009 H4 2.5L AWD Manual
Sport Sedan 2008 - 2009 H4 2.5L AWD Automatic & Manual
Sport Limited Hatchback 2012 - 2014 H4 2.0L AWD Automatic CVT
Sport Premium Hatchback 2012 - 2014 H4 2.0L AWD Automatic CVT & Manual
TS Wagon 2002 - 2004 H4 2.5L AWD Automatic & Manual
Touring Hatchback 2012 - 2014 H4 2.0L AWD Automatic CVT & Manual
Touring Sedan 2012 H4 2.0L AWD Automatic CVT & Manual
WRX Hatchback 2008 - 2014 H4 2.5L Turbo AWD Manual
WRX Hatchback 2008 - 2010 H4 2.5L Turbo AWD Automatic
WRX Sedan 2006 - 2014 H4 2.5L Turbo AWD Manual
WRX Sedan 2006 - 2010 H4 2.5L Turbo AWD Automatic
WRX Sedan 2002 - 2005 H4 2.0L Turbo AWD Automatic & Manual
WRX Wagon 2006 - 2007 H4 2.5L Turbo AWD Automatic & Manual
WRX Wagon 2002 - 2005 H4 2.0L Turbo AWD Automatic & Manual
WRX GT Sedan 2010 H4 2.5L Turbo AWD Automatic
WRX Limited Hatchback 2010 - 2014 H4 2.5L Turbo AWD Manual
WRX Limited Sedan 2006 - 2007 H4 2.5L Turbo AWD Automatic
WRX Limited Sedan 2006 - 2007, 2010 - 2014 H4 2.5L Turbo AWD Manual
WRX Limited Wagon 2006 - 2007 H4 2.5L Turbo AWD Automatic & Manual
WRX Premium Hatchback 2009 - 2014 H4 2.5L Turbo AWD Manual
WRX Premium Sedan 2009 - 2014 H4 2.5L Turbo AWD Manual
WRX SE Sedan 2010 H4 2.5L Turbo AWD Manual
WRX STI Hatchback 2008 - 2014 H4 2.5L Turbo AWD Manual
WRX STI Sedan 2004 - 2007, 2011 - 2014 H4 2.5L Turbo AWD Manual
WRX STI Limited Sedan 2007, 2011 - 2014 H4 2.5L Turbo AWD Manual
WRX STI Special Edition Hatchback 2010 H4 2.5L Turbo AWD Manual
WRX TR Sedan 2006 - 2007 H4 2.5L Turbo AWD Manual
XV Hatchback 2011 H4 2.0L AWD Automatic CVT
i Hatchback 2014 H4 2.0L AWD Automatic CVT
i Sedan 2013 - 2014 H4 2.0L AWD Automatic CVT
Legacy 2004-2012 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
2.0 Sedan 2008 H4 2.0L AWD Automatic
2.0R Sedan 2009 H4 2.0L AWD Automatic
2.5GT Sedan 2010 - 2012 H4 2.5L Turbo AWD Manual
2.5i Sedan 2010 - 2012 H4 2.5L AWD Automatic CVT
2.5i Sedan 2006 - 2012 H4 2.5L AWD Manual
2.5i Sedan 2006 - 2009 H4 2.5L AWD Automatic
2.5i Wagon 2006, 2008 H4 2.5L AWD Automatic & Manual
2.5i Limited Sedan 2010 - 2012 H4 2.5L AWD Automatic CVT
2.5i Limited Sedan 2006 - 2009 H4 2.5L AWD Automatic
2.5i Limited Wagon 2007 H4 2.5L AWD Automatic
2.5i Premium Sedan 2010 - 2012 H4 2.5L AWD Automatic CVT & Manual
2.5i Special Edition Sedan 2007 - 2009 H4 2.5L AWD Automatic & Manual
2.5i Special Edition Wagon 2007 H4 2.5L AWD Automatic & Manual
2.5i Touring Sedan 2012 H4 2.5L AWD Automatic CVT & Manual
2.5i Touring Sedan 2009 H4 2.5L AWD Automatic
3.0 Sedan 2008 H6 3.0L AWD Automatic
3.0 R Sedan 2009 H6 3.0L AWD Automatic
3.0 R Limited Sedan 2008 - 2009 H6 3.0L AWD Automatic
3.0 R Premier Sedan 2009 H6 3.0L AWD Automatic
3.6R Sedan 2010 - 2012 H6 3.6L AWD Automatic
3.6R Limited Sedan 2010 - 2012 H6 3.6L AWD Automatic
3.6R Premium Sedan 2010 - 2012 H6 3.6L AWD Automatic
Base Sedan 2009 - 2012 H4 2.5L AWD Automatic
GT Sedan 2005 - 2008, 2010 - 2012 H4 2.5L Turbo AWD Automatic
GT Sedan 2005 - 2006, 2008 H4 2.5L Turbo AWD Manual
GT Sedan 2004 H4 2.5L AWD Automatic & Manual
GT Wagon 2005 - 2006, 2008 H4 2.5L Turbo AWD Automatic & Manual
GT Wagon 2004 H4 2.5L AWD Automatic & Manual
GT Limited Sedan 2005, 2007 - 2009 H4 2.5L Turbo AWD Automatic & Manual
GT Limited Wagon 2005, 2007 H4 2.5L Turbo AWD Automatic & Manual
GT spec.B Sedan 2006 - 2009 H4 2.5L Turbo AWD Manual
L Sedan 2004 H4 2.5L AWD Automatic & Manual
L Wagon 2004 H4 2.5L AWD Automatic & Manual
L 35th Anniversary Sedan 2004 H4 2.5L AWD Automatic & Manual
L 35th Anniversary Wagon 2004 H4 2.5L AWD Automatic & Manual
Limited Sedan 2005, 2008 H4 2.5L AWD Automatic
Limited Sedan 2005 H4 2.5L AWD Manual
Limited Wagon 2005 H4 2.5L AWD Automatic & Manual
Sport Sedan 2010 - 2012 H4 2.5L AWD Automatic
Touring Sedan 2008 H4 2.5L AWD Automatic & Manual
Touring Wagon 2008 H4 2.5L AWD Automatic & Manual
i Sedan 2005 H4 2.5L AWD Automatic & Manual
i Wagon 2005 H4 2.5L AWD Automatic & Manual
Outback 2001-2012 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
2.5 XT Wagon 2008 H4 2.5L Turbo AWD Automatic & Manual
2.5i Wagon 2010 - 2012 H4 2.5L AWD Automatic CVT
2.5i Wagon 2006 - 2012 H4 2.5L AWD Manual
2.5i Wagon 2006 - 2009 H4 2.5L AWD Automatic
2.5i Basic Wagon 2007 H4 2.5L AWD Automatic & Manual
2.5i L.L. Bean Edition Wagon 2008 H4 2.5L AWD Automatic
2.5i Limited Sedan 2007 H4 2.5L AWD Automatic
2.5i Limited Wagon 2010 - 2012 H4 2.5L AWD Automatic CVT
2.5i Limited Wagon 2006, 2008 - 2009 H4 2.5L AWD Automatic
2.5i Limited Wagon 2006 H4 2.5L AWD Manual
2.5i Limited L.L. Bean Edition Wagon 2008 H4 2.5L AWD Automatic
2.5i Premium Wagon 2010 - 2012 H4 2.5L AWD Automatic CVT & Manual
2.5i Special Edition Wagon 2009 H4 2.5L AWD Automatic
2.5i Sport Wagon 2010 H4 2.5L AWD Automatic CVT & Manual
2.5i Touring Wagon 2012 H4 2.5L AWD Automatic CVT & Manual
3.0 R Wagon 2007 - 2008 H6 3.0L AWD Automatic
3.0 R Limited Wagon 2009 H6 3.0L AWD Automatic
3.0 R Premier Wagon 2009 H6 3.0L AWD Automatic
3.6R Wagon 2010 - 2012 H6 3.6L AWD Automatic
3.6R Limited Wagon 2010 - 2012 H6 3.6L AWD Automatic
3.6R Premium Wagon 2010 - 2012 H6 3.6L AWD Automatic
Base Wagon 2010 - 2012 H6 3.6L AWD Automatic
Base Wagon 2001 - 2004, 2008, 2010 - 2012 H4 2.5L AWD Automatic
Base Wagon 2001 - 2004, 2008 H4 2.5L AWD Manual
H6 Sedan 2002 - 2004 H6 3.0L AWD Automatic
H6 Sedan 2002 - 2003 H6 3.0L AWD Manual
H6 Wagon 2003 - 2004 H6 3.0L AWD Automatic
H6 Wagon 2003 H6 3.0L AWD Manual
H6 35th Anniversary Edition Wagon 2004 H6 3.0L AWD Automatic
H6 VDC Sedan 2004 H6 3.0L AWD Automatic
H6 VDC Wagon 2004 H6 3.0L AWD Automatic
L.L. Bean Wagon 2001 - 2004 H6 3.0L AWD Automatic
L.L. Bean Wagon 2001 - 2003 H6 3.0L AWD Manual
Limited Sedan 2001 - 2004 H4 2.5L AWD Automatic & Manual
Limited Wagon 2001 - 2005, 2008, 2010 - 2012 H4 2.5L AWD Automatic
Limited Wagon 2001 - 2005 H4 2.5L AWD Manual
Premier Wagon 2008 H4 2.5L AWD Automatic
R Sedan 2005 H6 3.0L AWD Automatic
R Wagon 2006 H6 3.0L AWD Automatic
R L.L. Bean Edition Sedan 2006 - 2007 H6 3.0L AWD Automatic
R L.L. Bean Edition Wagon 2005 - 2008 H6 3.0L AWD Automatic
R VDC Limited Wagon 2006 H6 3.0L AWD Automatic
Touring Wagon 2008 H4 2.5L AWD Automatic
VDC Sedan 2002 - 2003 H6 3.0L AWD Automatic & Manual
VDC Wagon 2001 - 2003 H6 3.0L AWD Automatic & Manual
VDC Limited Wagon 2005 H6 3.0L AWD Automatic
XT Wagon 2005 - 2008 H4 2.5L Turbo AWD Automatic
XT Wagon 2005 - 2006 H4 2.5L Turbo AWD Manual
XT Limited Wagon 2005 - 2009 H4 2.5L Turbo AWD Automatic & Manual
i Wagon 2005 H4 2.5L AWD Automatic & Manual
Verify before ordering — please confirm your vehicle's year, make, model and sub-model specifications before placing your order. If anything is unclear, our customer service team is available to help.

Policies

Shipping Information

We offer fast, reliable shipping on all orders:

  • Ships to all countries via US Postal Service Priority Mail.
  • Most orders ship within 1 business day.
  • Delivery time: 1-4 business days after shipment.
  • International shipping available, including APO/FPO addresses.
  • Tracking information provided for all shipments.
  • Additional handling fees may apply for oversized/overweight packages.

Return Policy

We want you to be 100% satisfied with your purchase. That's why we offer:

  • 120-Day Returns - Return any part within 120 days from date of receipt.
  • Must obtain RMA (Return Merchandise Authorization) number before returning.
  • Parts must be in original condition, uninstalled, unaltered, and in original packaging.
  • Important: Electrical parts are not returnable if unsealed.
  • Please inspect parts upon arrival and notify us within 5 days of receiving incorrect or damaged parts.
  • Refunds processed after warehouse receives return and credited to original payment method.

Warranty

This part comes with a limited lifetime warranty. Warranty begins on the original purchase date.

Warranty does NOT cover:

  • Shipping costs or labor expenses.
  • Installation errors.
  • Parts used for racing.
  • Commercial vehicle parts.
Walker Products Engine Management and Oxygen/Air-Fuel sensors have been engineered and developed to be an Original Equipment Manufacturers replacement for many vehicles worldwide. Every part number is manufactured for the specific application, fitment position on the vehicle, and will provide the relevant diagnostic system feedback as required by the ECU.Newer vehicles will store fault codes in the ECU, some will relate to the affected sensor and its associated systems. A failed sensor might make itself known by causing the engine to run poorly, increase fuel consumption, exhaust emissions, or illuminating a (MIL) malfunction indicator light. The sensor, wiring harness, and connector should also be checked for physical damage. This will most likely also cause their operational life to be shortened.We are an Automotive ISO9001/TS 16949 certified company, with un-paralleled customer service, marketing, and shipping. Our electronic and paper catalogs are designed for today’s fast paced marketplace, along with our eye catching packaging. Since 1946, Walker Products has been the number one choice for the engine management sensors and fuel system components needed for your vehicle. © 2024 Walker Products Inc. All rights reserved.

Fits Years: 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Fits Models: 9-2X, Baja, CX-5, CX-9, Forester, FR-S, Impreza, Legacy, Outback

Go-Parts Garage · Featured Guide

A Guide to Oxygen Sensor Replacement for the 2016-2024 Subaru Outback

Everything you need to know about diagnosing and replacing a faulty oxygen sensor on your Outback.

Read Full Guide

⚠️ Related Trouble Codes (OBD-II)

43 matching guides

If your scan tool is showing one of these trouble codes, this part is a common fix. Each guide explains the code, how to diagnose it, and exactly what to replace.

P0030
A/F Sensor Heater Circuit Fault Causes and Fixes
2010-2012 Subaru Outback
P0030
A/F Sensor Heater Failure Causes and Fixes
2007-2014 Subaru Impreza WRX/STI
P0030
Heater Circuit Failure Causes & Fixes
2007-2011 Subaru Impreza
P0030
HO2S Heater Control Circuit Causes and Fixes
2003-2009 Subaru Outback
P0031
Front A/F Sensor Heater Circuit Causes and Fixes
2008-2014 Subaru Impreza WRX STI
P0031
Heater Circuit Causes and Fixes
2003-2009 Subaru Outback
P0032
Front O2 Sensor Heater Failure Causes and Fixes
2008-2014 Subaru Impreza WRX
P0036
Rear O2 Sensor Heater Circuit Causes and Fixes
2008-2011 Subaru Impreza
P0036
Rear O2 Sensor Heater Fixes & Causes
2010-2014 Subaru Outback
P0036
Rear O2 Sensor Heater Fault Causes and Fixes
2010-2014 Subaru Legacy
P0037
Rear O2 Sensor Heater Circuit Causes and Fixes
2005-2009 Subaru Legacy
P0037
Rear O2 Sensor Heater Fixes
2010-2012 Subaru Outback
↑ A single part can trigger multiple related trouble codes. Each guide is vehicle- and code-specific.
Why Millions Choose Go-Parts

Your Go-To Place
for auto parts.

In operation since 2007. Trusted by over a million DIYers, mechanics, and body shops across all 50 states.

100%
Money-Back Guarantee

Shop With Total Confidence

If it doesn't fit, we make it right. No gimmicks, no fine print.

120
Day Return Window

4× the Industry Standard

Most retailers stop at 30 days. We give you a full four months to install, test, and return for a 100% refund — return shipping on us.

NEW
Direct-Fit Replacement

Engineered To OEM Specs

Brand-new aftermarket parts from trusted suppliers — built to original-equipment specifications so they fit and function like the factory unit, at a fraction of the price.

What buyers are saying.

★★★★★ 4.9 1,451 verified reviews

Racing Partner Videos

×

Search by Vehicle

1
2
3
Added to cart · Part