Oxygen Sensor - Universal
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Denso Oxygen Sensor - Universal

Part No. 234-4209 Warranty Details  
$61.99
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Designed to meet the increasing demands of today's engines. Each of our oxygen sensors is constructed of the highest quality materials available. High-quality stainless steel, porous polytetrafluoroethylene (PTFE), fluorine rubber, aluminum oxide, high-grade platinum and ceramics are used in each Denso sensor.
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Connector Type:Universal
Heated:Yes
Length:11.77 in
Overall Length:12.96 in
Thread Size:M18 mm
Wire Harness Length:9.08 in
Wire Quantity:4

REVIEW SNAPSHOT®

by PowerReviews
DensoOxygen Sensor - Universal
 
3.3

(based on 17 reviews)

Ratings Distribution

  • 5 Stars

     

    (3)

  • 4 Stars

     

    (6)

  • 3 Stars

     

    (3)

  • 2 Stars

     

    (3)

  • 1 Stars

     

    (2)

63%

of respondents would recommend this to a friend.

Pros

  • Easy to use (4)

Cons

  • Difficult to use (5)

Best Uses

  • Small cars (5)
  • Trucks (4)
  • Large cars (3)
    • Reviewer Profile:
    • Casual driver (4), Mechanic (4), Auto enthusiast (3)
    • Was this a gift?:
    • No (15)

Most Liked Positive Review

 

Make sure you buy the right one

Had to do a cat change on my 99 honda prelude, so i change the O2 sensors as well. No more codes but make sure you get the right sensor. I wanted the...Read complete review

Had to do a cat change on my 99 honda prelude, so i change the O2 sensors as well. No more codes but make sure you get the right sensor. I wanted the OEM direct fit and this one came without the plug end. I had to splice the old stuff on to make it work... other that that, Denso works fine and is the factory part on most Honda's.

VS

Most Liked Negative Review

 

Good headline

First the staff were phenomenal, incredibly helpful and will certainly be back. But the product was a let down, the instructions were fine, but didn't have the same setup as in my...Read complete review

First the staff were phenomenal, incredibly helpful and will certainly be back. But the product was a let down, the instructions were fine, but didn't have the same setup as in my vehicle, and therefore it was a guessing/matching game that didn't match one or the other but a combination there of. So the product works fine, but the instructions were junk.

Reviewed by 17 customers

Displaying reviews 1-10

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(7 of 13 customers found this review helpful)

 
5.0

good deal

By 

from Chiraq

About Me Mechanic

See all my reviews

Ask me a question

3 or more reviews submitted

Pros

  • Easy To Use

Cons

    Best Uses

      Comments about Denso Oxygen Sensor - Universal:

      Easy to install.

      (6 of 11 customers found this review helpful)

       
      5.0

      Freakin Awesome

      By 

      from Roanoke, VA

      About Me Auto Enthusiast, Mechanic, Truck Enthusiast

      See all my reviews

      Ask me a question

      Verified Buyer
      Helpful Reviewer

      Pros

      • Easy To Use
      • Splice It And Save 20

      Cons

        Best Uses

          Comments about Denso Oxygen Sensor - Universal:

          Oxygen sensor was exactly like the OEM, except you have to splice the plug onto the new sensor. No big deal, very simple and takes about ten minutes tops and everything you need comes with the new sensor, plus you save $20 that equals $120 per hour for your time. That my friend, is a no brainer.

          • Was this a gift?:
          • No

          (1 of 4 customers found this review helpful)

           
          5.0

          Denso Oxygen Sensor- Toyota Sequoia

          By 

          from Southern Ohio

          See all my reviews

          Verified Buyer

          Comments about Denso Oxygen Sensor - Universal:

          Worked great!

          • Car & Truck:
          • Auto Enthusiast
          • Was this a gift?:
          • No
           
          4.0

          Denso Universal o2 sensor for Scion/Toyota installation

          By 

          from Portsmouth, NH

          Verified Buyer

          Pros

          • Low price fix for down stream o2 sensor failure

          Cons

          • must reuse plug in from old sensor
          • no wiring diagram for Scion/Toyota included
          • splicing 4 wires

          Best Uses

          • Use for 2nd o2 sensor in exhaust pipe

          Comments about Denso Oxygen Sensor - Universal:

          For Scion/Toyota splice the sensor's two black wires to the two white Scion plug wires. It doesn't matter which of the two are connected since polarity is not an issue for the heat element. With two wires left to splice we have a 50% chance for success. lol The sensor ground wire is white and Scion/toyota use color gray for grounds. connect white to gray leaving the sensor sending wire blue to be connected to the Scion/Toyota black wire from the plug. The result should be no check engine light and a better running fuel mixture.
          Thanks and good luck

          • Was this a gift?:
          • No
           
          4.0

          Saved money

          By 

          from Illinois

          Verified Buyer

          Comments about Denso Oxygen Sensor - Universal:

          I used the sensor tool kit available in advance store, and really needed it.

          • Was this a gift?:
          • No

          (0 of 1 customers found this review helpful)

           
          4.0

          Tough Install

          By 

          from COS, CO.

          About Me Truck Enthusiast

          See all my reviews

          3 or more reviews submitted

          Pros

          • Lightweight

          Cons

          • Difficult To Use

          Best Uses

          • Trucks

          Comments about Denso Oxygen Sensor - Universal:

          Replace upstream on 5.3l 2001 Silverado. Cleared my fault code I was getting. Made me happy. Installing the driver side upstream sensor was a real pain. Tough to reach and disconnect/reconnect. Passenger side was a breeze. Have not replaced downstream sensors as my code was cleared after upstream replacement.

          • Was this a gift?:
          • No

          (4 of 9 customers found this review helpful)

           
          4.0

          Cheaper than OEM

          By 

          from St Augustine

          About Me Auto Enthusiast

          Verified Buyer
          Helpful Reviewer

          Pros

          • Easy To Use

          Cons

            Best Uses

            • Large Cars
            • Small Cars
            • Trucks

            Comments about Denso Oxygen Sensor - Universal:

            Bought this sensor so that I did not have to tear the interior apart getting to the sensor plug.
            Heat shrink tubing was a bit cheap

            • Was this a gift?:
            • No

            (7 of 13 customers found this review helpful)

             
            4.0

            gotta be smarter than the O2 sensor to u

            By 

            from iowa

            About Me Mechanic

            Pros

            • Cheaper Saves 20
            • You Must Be Smarter Than

            Cons

              Best Uses

              • Large Cars
              • Small Cars
              • Trucks

              Comments about Denso Oxygen Sensor - Universal:

              I helps if buyer realizes that you may have to crimp some wires but anyone with reasonable smarts can do it in a couple minutes

              • Was this a gift?:
              • No

              (3 of 3 customers found this review helpful)

               
              4.0

              Make sure you buy the right one

              By 

              from Washington, PA

              Verified Buyer
              Helpful Reviewer

              Pros

              • Easy To Use

              Cons

              • No plug

              Best Uses

                Comments about Denso Oxygen Sensor - Universal:

                Had to do a cat change on my 99 honda prelude, so i change the O2 sensors as well. No more codes but make sure you get the right sensor. I wanted the OEM direct fit and this one came without the plug end. I had to splice the old stuff on to make it work... other that that, Denso works fine and is the factory part on most Honda's.

                • Car & Truck:
                • Casual Driver
                • Was this a gift?:
                • No

                (5 of 11 customers found this review helpful)

                 
                3.0

                Be careful oxygen sensor not air fuel se

                By 

                from Seminole

                Helpful Reviewer

                Comments about Denso Oxygen Sensor - Universal:

                The error code on my Toyota said air fuel sensor failure. Was sold an oxygen sensor for the car. They are not the same. If you buy one with the plug attached you would realize immediately. If you have to replace the sensor on the exhaust manifold make sure you aren't looking for 234-9021. It will have a different plug. Also the ohms are 1.2 on the air fuel sensor and 16 on the oxygen sensor (black wires). This is not clearly noted elsewhere I have found. Good luck and the other part worked fine for me.

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                Do you have questions about this product?

                 

                Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

                51 Questions | 52 Answers
                Displaying questions 1-10Previous | Next »
                • Q:

                  Denso Oxygen Sensor - Universal Part No. 234-4209. Will this sensor work for my 2001Toyota 4runner sr5 4WD as replacement for the upstream sensor?
                  Thank you!
                  Asked on 6/19/2017 by TIM from AKRON OHIO

                  1 answer

                  • CUSTOMER CARE

                    A:

                    No, TIM! This Denso Oxygen Sensor - Part No. 234-4209 is a downstream sensor. You'll need the Denso Air Fuel Sensor - Part No. 234-9002 for the upstream for your 2001 Toyota 4Runner SR5.

                    Answered on 6/20/2017 by Solomon from AAP
                • Q:

                  I have a 2007 Toyota Sienna LE. I was told the bad oxygen sensor was bank1/sensor1. Is this the correct part? Is bank1/sensor1 in front or back?
                  Asked on 1/29/2017 by Jim from Garfield Hts, OH

                  1 answer

                  • CUSTOMER CARE

                    A:

                    No, Jim! This Denso Oxygen Sensor - Part No. 234-4209 is a downstream left sensor. You'll need the Denso Air Fuel Sensor - Part No. 234-9012 the upstream right sensor (Bank 1 Sensor 1) for your 2007 Toyota Sienna LE.

                    Answered on 1/31/2017 by Solomon from AAP
                • Q:

                  I have 1999 Toyota Avalon and want to replace O2 Sensor, Bank 1 Sensor 1. Is this compatible?
                  Asked on 12/2/2016 by Zee

                  1 answer

                  • CUSTOMER CARE

                    A:

                    Yes, Zee! This Denso Oxygen Sensor - Part No. 234-4209 is an exact fit for your 1999 Toyota Avalon to replace to replace Bank 1 Sensor 1 position.

                    Answered on 12/4/2016 by Solomon from AAP
                • Q:

                  i have a 2000 Toyota Camery Solara se. I need to replace o2 sensors, does anyone know how much they are
                  Asked on 10/31/2016 by kracker from midland tx.

                  1 answer

                  • CUSTOMER CARE

                    A:

                    Hi Kracker, glad to assist you! I think you will need two sensors for upstream and two sensors for downstream. However, when it comes to repair and maintenance it is always recommended referring the vehicle owner's manual for the exact specifications to get better and safer results.

                    Answered on 11/2/2016 by Steve from AAP
                • Q:

                  I have a 2005 Toyota sienna LE, will this sensor replace both of the Oxygen sensor?
                  Asked on 12/10/2015 by Keith

                  1 answer

                  • CUSTOMER CARE

                    A:

                    Hi Keith, I'm glad to assist you. This Denso Oxygen Sensor - Universal (Part No. 234-4209) is an exact downstream front oxygen sensor for your 2005 Toyota Sienna LE. In order to assist you further, please provide that your vehicle is 4WD or RWD, and please specify which side oxygen sensor your looking for.

                    Answered on 12/10/2015 by Steve from AAP
                • Q:

                  hi, i have 2001 toyota avalon, 3.0, codes 01135 & 01155
                  (A/F SENSOR HEATER CIRCUIT RESPONSE MALFUNCTION- BANK-1 / SENSOR-1)
                  is this the o2 sensor i need, and do i need 2 of them?
                  thanks for your help!
                  Asked on 8/31/2015 by scottyboy from pensacola, fl.

                  1 answer

                  • CUSTOMER CARE

                    A:

                    Hi Scottyboy! The P1135 and P1155 are set when the Engine Control Module (ECM) detects a heated oxygen sensor heater circuit malfunction. The possible causes will be faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1, Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 harness is open or shorted, Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection or Faulty Engine Control Module (ECM). However, I would suggest that you take your vehicle and get it thoroughly checked by a certified mechanic before buying any parts that may/may not solve the problem.

                    Answered on 8/31/2015 by Solomon
                • Q:

                  Hi, What's the difference between upstream and downstream sensor?
                  Asked on 8/13/2015 by G

                  1 answer

                  • CUSTOMER CARE

                    A:

                    Hi G, happy to help you! The main function of the oxygen sensor is to act like the nose of the vehicle. They take readings from the exhaust and convert them into data for the vehicle's computer to process. The computer then decides how to adjust fuel, air and other components to keep pollutants to a minimum and engine performance at a maximum. Upstream Sensor: The upstream oxygen sensor is located before the catalytic converter. This measures the level of pollutants coming directly from the engine. It also senses any raw, unburned fuel coming from the combustion chambers. Downstream Sensor: The downstream oxygen sensor is located directly after the catalytic converter. This sensor measures the pollutants making it through the converter and out of the tailpipe. The data from this sensor is compared to that of the upstream sensor. If the data between the two sensors becomes more similar, the vehicle's computer may trigger a catalyst inefficiency check engine code, which turns on the Check Engine light.

                    Answered on 8/13/2015 by Steve from AAP
                • Q:

                  I Have a 2002 Toyota Rav4 4WD Automatic. I need Oxygen Sensor for Bank 1 Sensor 2 is this the best option??
                  Asked on 7/22/2015 by Raul from New Jersey

                  1 answer

                  • CUSTOMER CARE

                    A:

                    Hi Raul, I'm happy to help you! The bank 1 sensor 2 is a downstream sensor. This Denso Oxygen Sensor - Universal (Part No. 234-4209) is an exact downstream sensor for your 2002 Toyota Rav4 and this fits right and left.

                    Answered on 7/22/2015 by Solomon
                • Q:

                  My car is throwing a code PO430 - it is a 2004 lexus rx330. It has been suggested that I replace the front o2 sensors (i'm guessing there are 2 of them). Will this particular air sensor work for me and given the code do I really need to be looking at replacing both front sensors? Thanks
                  Asked on 6/15/2015 by Phil from Portland, OR

                  1 answer

                  • CUSTOMER CARE

                    A:

                    Happy to answer your question Phil! P0430 reads Catalyst System Efficiency below Threshold Bank 2, typically the first thing to look at would be the catalytic converter. Typically that would be the suspect part, if you can get underneath and shake it and you hear rattling inside that means the internals are degraded and broken up. It is possible there could be other parts that could cause this code such as the Oxygen sensor, Intake air leaks, Fuel injectors may be faulty ,Fuel injector leaks, Spark plugs may be faulty. The sensor you selected will be the downstream left (driver side rear). I suggest having a certified mechanic test the associated parts and confirming before purchasing a catalytic converter.

                    Answered on 6/16/2015 by Panda from AAP
                • Q:

                  Will this sensor work for my 2002 Toyota Sequoia 4WD as replacement for the upstream sensor?
                  Thank you!
                  Asked on 6/13/2015 by Vio from United States

                  1 answer

                  • CUSTOMER CARE

                    A:

                    I'm happy to answer you, Vio! This Denso Oxygen Sensor - Part No. 234-4209 is an exact replacement as an upstream oxygen sensor for your 2002 Toyota Sequoia 4WD.

                    Answered on 6/13/2015 by Solomon
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