Finish Selecting Your Vehicle to Shop For Your Oxygen Sensor

Choose a Year for your Mazda 's Oxygen Sensor

  • 2015
  • 2014
  • 2013
  • 2012
  • 2011
  • 2010
  • 2009
  • 2008
  • 2007
  • 2006
  • 2005
  • 2004
  • 2003
  • 2002
  • 2001
  • 2000
  • 1999
  • 1998
  • 1997
  • 1996
  • 1995
  • 1994
  • 1993
  • 1992
  • 1991
  • 1990
  • 1989
  • 1988
  • 1987
  • 1986
  • 1985
  • 1984
  • 1983
Show More Years

Shop By Brand

The Following brands are available based on your search.

  • Bosch
    Bosch
  • Delphi
    Delphi
  • Denso
    Denso
  • Genuine
    Genuine
  • NGK
    NGK
  • Spectra
    Spectra
  • Standard Ignition
    Standard Ignition
  • Walker
    Walker

Best Selling Genuine Mazda Oxygen Sensors

  • We Stock the following top leading brands, including Genuine, Delphi, Denso
  • Constantly Updated Inventory of Mazda Replacement Oxygen Sensor Parts

We stock Oxygen Sensor parts for most Mazda models, including 3 Sport, B2200, B2300, B2600, B3000, CX5, CX7, CX9, MPV, MX6, Miata, Millenia, Protege, Protege5, RX7, RX8, Tribute, 3, 5, 6, 626.

Genuine
2004 Mazda 3 Oxygen Sensor Genuine

P311-5A82ED8    New

Qty:
$229.91
Genuine Oxygen Sensor
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • California Emissions
  • Rear
Brand: Genuine
Free Ground Shipping on this item
Additional Fitment Information:
Vehicle
2004 - Mazda 3
Genuine
2005 Mazda 3 Oxygen Sensor Genuine

P311-5A82ED8    New

Qty:
$229.91
Genuine Oxygen Sensor
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • California Emissions
Brand: Genuine
Free Ground Shipping on this item
Additional Fitment Information:
Vehicle
2005 - Mazda 3
Delphi
2004 Mazda RX-8 Oxygen Sensor Delphi

P311-1EC2ACB    New

Qty:
$170.94
Delphi Oxygen Sensor
  • Located in Main Catalyst
  • After Catalyst
  • - After Catalyst
  • Rear
Brand: Delphi
Free Ground Shipping on this item
Additional Fitment Information:
Vehicle
2004 - Mazda RX-8
Delphi
2005 Mazda RX-8 Oxygen Sensor Delphi

P311-1EC2ACB    New

Qty:
$170.94
Delphi Oxygen Sensor
  • Located in Main Catalyst
  • - After Catalyst
Brand: Delphi
Free Ground Shipping on this item
Additional Fitment Information:
Vehicle
2005 - Mazda RX-8
Denso
1995 Mazda B3000 Oxygen Sensor - Upstream Denso

P311-3C29EB3    New

Qty:
$29.89
Denso Oxygen Sensor  Upstream
  • 4 Wire, Direct Fit, Heated, Wire Length: 18.82
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Position
1995 - Mazda B3000 Upstream
Denso
Qty:
$29.89
Denso Oxygen Sensor  Downstream
  • 4 Wire, Direct Fit, Heated, Wire Length: 18.82
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
2004 - Mazda B4000 V 4016 - Downstream
Denso
Qty:
$29.89
Denso Oxygen Sensor  Upstream Right
  • 4 Wire, Direct Fit, Heated, Wire Length: 18.82
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1999 - Mazda B3000 V - 182 Upstream Right
Denso
Qty:
$29.89
Denso Oxygen Sensor  Downstream
  • 4 Wire, Direct Fit, Heated, Wire Length: 18.82
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
2004 - Mazda B2300 L 2300 - Downstream
Denso
1995 Mazda B2300 Oxygen Sensor - Upstream 4 Cyl 2.3L Denso

P311-3C29EB3    New

Qty:
$29.89
Denso Oxygen Sensor  Upstream
  • 4 Wire, Direct Fit, Heated, Wire Length: 18.82
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1995 - Mazda B2300 L 2295 - Upstream
Denso
Qty:
$29.89
Denso Oxygen Sensor  Downstream Right
  • 4 Wire, Direct Fit, Heated, Wire Length: 18.82
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
2007 - Mazda B3000 V 2986 182 Downstream Right
Denso
1995 Mazda B3000 Oxygen Sensor - Upstream Denso

P311-3C29EB3    New

Qty:
$29.89
Denso Oxygen Sensor  Upstream
  • 4 Wire, Direct Fit, Heated, Wire Length: 18.82
  • O.E. Quality Replacement Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Position
1995 - Mazda B3000 Upstream
Denso
Qty:
$29.89
Denso Oxygen Sensor  Upstream Right
  • 4 Wire, Direct Fit, Heated, Wire Length: 18.82
  • O.E. Quality Replacement Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1999 - Mazda B3000 V - 182 Upstream Right
Denso
1995 Mazda B2300 Oxygen Sensor - Upstream 4 Cyl 2.3L Denso

P311-3C29EB3    New

Qty:
$29.89
Denso Oxygen Sensor  Upstream
  • 4 Wire, Direct Fit, Heated, Wire Length: 18.82
  • O.E. Quality Replacement Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1995 - Mazda B2300 L 2295 - Upstream
Denso
Qty:
$29.89
Denso Oxygen Sensor  Downstream
  • 4 Wire, Direct Fit, Heated, Wire Length: 18.82
  • with 19" Downstream Sensor O.E. Quality Replacement Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
2004 - Mazda B2300 L 2300 - Downstream
Denso
Qty:
$29.89
Denso Oxygen Sensor  Downstream
  • 4 Wire, Direct Fit, Heated, Wire Length: 18.82
  • with 19" Downstream Sensor O.E. Quality Replacement Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
2004 - Mazda B4000 V 4016 - Downstream
Denso
Qty:
$29.89
Denso Oxygen Sensor  Downstream Right
  • 4 Wire, Direct Fit, Heated, Wire Length: 18.82
  • O.E. Quality Replacement Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
2007 - Mazda B3000 V 2986 182 Downstream Right
Denso
1995 Mazda B3000 Oxygen Sensor - Upstream Denso

P311-3C29EB3    New

Qty:
$29.89
Denso Oxygen Sensor  Upstream
  • 4 Wire, Direct Fit, Heated, Wire Length: 18.82
  • O.E. Quality Replacement Sensor 2 Required
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Position
1995 - Mazda B3000 Upstream
Denso
Qty:
$29.89
Denso Oxygen Sensor  Downstream
  • 4 Wire, Direct Fit, Heated, Wire Length: 18.82
  • O.E. Quality Replacement Sensor with 19" Downstream Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
2004 - Mazda B2300 L 2300 - Downstream
Denso
Qty:
$29.89
Denso Oxygen Sensor  Downstream
  • 4 Wire, Direct Fit, Heated, Wire Length: 18.82
  • O.E. Quality Replacement Sensor 2 Required with 19" Downstream Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
2004 - Mazda B4000 V 4016 - Downstream
Denso
Qty:
$29.15
Denso Oxygen Sensor  Upstream
  • 4 Wire, Direct Fit, Heated, Wire Length: 18.9
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
2001 - Mazda Tribute L 1991 - Upstream

Latest Mazda Repair and Oxygen Sensor Installation Advice

CarJunky AutoAdvice

2001 Mazda Protege Eating Gas - Problem Code P1170 - Oxygen Sensor?

Showing 7 out of 7 Posts
Question From m0pelley99 on 2001 Mazda Protege Eating Gas - Problem Code P1170 - Oxygen Sensor?

Year: 2001
Make: Mazda
Model: Protege
Engine size: 1.6L
110,000km

The car is getting about 60km on a quarter tank of gas, which is very bad. I have the same car, one year older, that gets 150kms to a quarter tank. The car runs totally smooth.

We have done some research and found that most times a P1170 code means bad front oxygen sensor.

I have made a video of the voltage that the oxygen sensor outputs when going through revving cycles.

Apparently normal working sensors output 0.45-0.5v when at idle. When car accelerates, it goes up to 0.9v, and down to 0.1v during deceleration. Do these erratic readings mean the oxygen sensor is gone bad? Also, the oxygen sensor reads 0.112v when the engine is OFF.

Here is the link to the video:

Response From Hammer Time

No, that's not how a working 0/2 sensor reads. It reads low until it gets heated up and once it;s up to temp it's supposed to constantly cross count from real low to real high and back again. The more frequently it ranges, the better it is working.

Response From m0pelley99

Any idea what could be causing my bad mileage then? Let me remind you the car runs VERY good, better than my older one does.
I have other research saying it could be either a clogged EGR valve, or misreading MAF. But the car sucks in air quite good.

The car has a lot of power. Sometimes I get a funny smell when I run her through to 6,000rpm, and then park it. Kind of like sulfur, but not really. Almost smells like unburnt fuel.

Response From Hammer Time

Why don't you replace the sensor and find out.

Response From m0pelley99


Why don't you replace the sensor and find out

But isn't my sensor running like normal?

Would a bad O2 sensor cause rough idle?

I remember my old Protege had a problem with the rear O2 sensor, and that caused all sorts of issues. It would stall, hesitate, lose power, etc.

Response From Hammer Time

No and No.............Didn't I just explain that to you.

Response From m0pelley99 Top Rated Answer


No and No.............Didn't I just explain that to you.

Whoops sorry! Read your first reply wrong.

I'll go and replace the O2 sensor tomorrow.

Thanks for the confirmation :)

1996 mazda 626 dies when put in park

Showing 2 out of 2 Posts
Question From michelleat on 1996 mazda 626 dies when put in park

1996 mazda 626, i recently bought this car and need some help. when the car is put in park it dies immediatley, and while stopped idols extremely rough, on acceleration it acts like it is going to die then will accelerate quickly. do you think this could be the oxygen sensor. once the car is running it is fine. the check engine light is on

Response From nickwarner Top Rated Answer

you will need to get the codes pulled and post them here

1999 mazda 626 es V6 - Error codes P1131,p0133,p0040

Showing 2 out of 5 Posts | Show 3 Hidden Posts
Question From baddyfan on 1999 mazda 626 es V6 - Error codes P1131,p0133,p0040

I have a 1999 Mazda 626 ES V6, auto trans, FWD, and 91K miles on it. I have the Check Engine light on since a few weeks.

I have the following error codes using OBDII tool
P0133 - Heated oxygen sensor H02S RF circuit malfunction

P1131 - Heated Oxygen sensor Bank1, sensor1 (H02S11)

P0040 - EGR system leak detected

The car starts, and runs fine, no strange noises, or stuttering. Recently, I had the fuel pump replaced. Gas lid is closed tightly.

I would appreciate if someone could help me get a rough estimate for repairs. I'm trying to make a decision whether to get the repairs done or get a replacement car. Thanks very much!

Response From Tom Greenleaf

Try spraying the outside of EGR area with carb cleaner and see if that changed idle. If no change then try cleaning the EGR. The pintle underside may not seal well?? If caked up sometimes they can be cleaned.

The EGR may be taxing O2 sensors and the O2 sensors are not the first problem but the result of another for now. Not sure why it said fault in circuit. Do see if it's at least plugged in properly and no burned wires,

T

Response From baddyfan Top Rated Answer

Thanks for the reply, Tom! I appreciate it. I will give it a try.

Response From Tom Greenleaf

Do give it a try. Know that code readings vary in quality and info collected. Take them with some common sense and don't just toss parts at everything it found some "error" with too quickly but think it thru.

When it can't communicate you will get a code that, that area has an issue. Can be a dumb as being unplugged. One minor fault that makes an engine run improperly can tax other items so you can get multiple codes and it's only one problem. Some when ignored can cause real problems with items that could be saved if timely.

Do post back with any findings or changes in codes,

T

Response From baddyfan

Troubleshooting the problem seemed beyond by abilities. I had a repair shop look at it. They indicated that the EGR valve may need to replaced. Its diaphgram seemed to be faulty. They also said that cleaning will not resolve the issue. EGR valve is around $350 + $230 labor. I was also able to locate the part at a salvage yard for a fraction of the cost and found someone that is willing to install it for around $100 I am wondering if it is worth replacing it for a car with 91K miles. Any suggestions will be appreciated. Thanks again!

Engine oil loss and smoking out of the tailpipe

Showing 2 out of 2 Posts
Question From oddgca on Engine oil loss and smoking out of the tailpipe

2006
Mazda
Protoge
2 l ES
279912

A lot of black smoke comes out of the tail pipe.
Engine oil is lost.
I tried to get a read out with my OBD2 Car reader, but no fault code is noted.
Misfire Monitor, Fuel System Monitor, Comprohensive Component Monitor are steady.
Catalyst Monitor, Evaporative System Monitor, Oxygen Sensor Monitor, Oxygen Sensor Heater Monitor and Exhaust Gas Recirculating Monitor are flashing during the testing.
Could it be, that the OBD2 does not work on the Mazda. It works well no my 97 Sable and 2000 Taurus.
Any of your comments would be greatly appreciated.
Regards,
Otto Doering

Response From Discretesignals Top Rated Answer

How much oil did it lose? You might want to find out where the oil is going or is leaking from.

Black smoke usually means the engine is burning too much fuel. You need to think of things that would make an engine run rich. You really need scan tool data to see how the engine computer is controlling fuel and what the inputs look like.

Has there been any recent work done before this happened?

Check Engine Light

Showing 2 out of 3 Posts | Show 1 Hidden Posts
Question From antimatter1242 on Check Engine Light

Dealer told me my oxygen sensor was faulty on my Mazda B2300 and that there are 2 sensors on my truck, a precat and postcat and the price to change they gave me was very high. I bought the Walker Sensors online and installed them myself and the truck still runs great but, the check engine light is still on. How do you clear the light? Thanks.

Response From mopar_man1991

Hey you could also go to Autozone they give free check engine light tests and they can tell you what is wrong.

Response From way2old Top Rated Answer

Please post year, engine size, mileage. It is all listed in the first post in this sub-forum. Thanks. OBD I and OBDII are different. We need information to give you information.