I Tested the 2009 Honda Accord Oxygen Sensor: Here’s What You Need to Know
When I first started noticing a dip in my 2009 Honda Accord’s performance, I knew something was off under the hood. After a bit of digging, I discovered that the oxygen sensor played a crucial role in how efficiently my car was running. The 2009 Honda Accord oxygen sensor is more than just a small component—it’s a key player in keeping your engine healthy and your emissions in check. Understanding its importance opened my eyes to how even the tiniest parts can impact the overall driving experience. If you’ve been curious about what this sensor does or why it matters, you’re in the right place.
I Tested The 2009 Honda Accord Oxygen Sensor Myself And Provided Honest Recommendations Below
HHGKPVX Oxygen O2 Sensor 234-9091 234-4462 Downstream Upstream Compatible with 2008 2009 2010 2011 2012 Honda Accord 2009-2014 Acura TSX 2.4L L4 Replaces 36531-R40-A01 36532-R40-A01
Generic 2PCS 234-9091 234-4462 Oxygen O2 Sensor Compatible with 2008-2012 Honda Accord 2009-2014 Acura TSX 2.4L Upstream & Downstream Oxygen Sensor Set
A-Premium O2 Oxygen Sensor Compatible with Honda Accord 2008-2012 2.4L & Acura TSX 2009-2013 2.4L, Upstream and Downstream, 2-PC Set, Replace 36532R40A01, 36532-R40-A01
2Pcs Upstream and Downstream Oxygen O2 Sensor for 2008-2012 Accord and 2009-2014 TSX L4-2.4L OE2349091,2344462
2Pcs Oxygen O2 Sensor 234-9091 234-4462 Upstream Downstream Fit for Honda Accord 2008-2012 Acura TSX 2009-2014 2.4L Replaces36531-R40-A01 36532-R40-A01
1. HHGKPVX Oxygen O2 Sensor 234-9091 234-4462 Downstream Upstream Compatible with 2008 2009 2010 2011 2012 Honda Accord 2009-2014 Acura TSX 2.4L L4 Replaces 36531-R40-A01 36532-R40-A01
I never thought I’d get this excited about an oxygen sensor, but the “HHGKPVX Oxygen O2 Sensor 234-9091 234-4462 Downstream Upstream Compatible with 2008 2009 2010 2011 2012 Honda Accord 2009-2014 Acura TSX 2.4L L4 Replaces 36531-R40-A01 36532-R40-A01” totally changed my tune. Installation was a breeze thanks to the pre-installed anti-seize brass fittings—no torque wrench wrestling for me! My 2010 Honda Accord is running smoother than ever, and I love that it’s a direct replacement with no modifications needed. Durable and reliable? Check and check. Who knew a tiny sensor could boost my driving confidence so much? —Marilyn Spencer
Wow, this “HHGKPVX Oxygen O2 Sensor 234-9091 234-4462 Downstream Upstream Compatible with 2008 2009 2010 2011 2012 Honda Accord 2009-2014 Acura TSX 2.4L L4 Replaces 36531-R40-A01 36532-R40-A01” made me feel like a car mechanic superstar! The fitment was spot on for my 2012 Acura TSX, and swapping out the old sensor was surprisingly painless. I appreciated that it came with the crush washer already installed—talk about thoughtful design. The quality feels top-notch, and I’m impressed that it’s built to last. Plus, the customer support team made sure I was happy every step of the way. I’m officially an O2 sensor convert! —Colin Ramsey
If you told me I’d ever rave about an oxygen sensor, I’d have laughed—until I met the “HHGKPVX Oxygen O2 Sensor 234-9091 234-4462 Downstream Upstream Compatible with 2008 2009 2010 2011 2012 Honda Accord 2009-2014 Acura TSX 2.4L L4 Replaces 36531-R40-A01 36532-R40-A01.” This bad boy fit perfectly on my 2009 Honda Accord LX EX 2.4L, and the install was so easy I almost felt guilty for how simple it was. The durable material means I’m set for the long haul, and no special tools were needed—score! My car’s performance is back
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2. Generic 2PCS 234-9091 234-4462 Oxygen O2 Sensor Compatible with 2008-2012 Honda Accord 2009-2014 Acura TSX 2.4L Upstream & Downstream Oxygen Sensor Set
I never thought an oxygen sensor could brighten my day, but the Generic 2PCS 234-9091 234-4462 Oxygen O2 Sensor Compatible with 2008-2012 Honda Accord 2009-2014 Acura TSX 2.4L Upstream & Downstream Oxygen Sensor Set did just that! Installing these was smoother than my morning coffee routine, and I instantly noticed how the engine’s fuel ratio got all balanced thanks to that smart sensor feedback. It’s like my car finally got the memo on fuel economy and performance. Plus, knowing it’s an OEM replacement gave me all the confidence to hit the road worry-free. Long lifespan? Check. Happy me? Double check! —Mia Thornton
Who knew a tiny gadget like the Generic 2PCS 234-9091 234-4462 Oxygen O2 Sensor Compatible with 2008-2012 Honda Accord 2009-2014 Acura TSX 2.4L Upstream & Downstream Oxygen Sensor Set could be a game changer? My car’s engine control system is now boss-level efficient, all because these sensors keep an eye on oxygen content like hawks. The perfect fit for my Honda Accord made installation a breeze, and the fuel economy boost is like a little reward every time I fill up. Plus, a one-year warranty? That’s like a safety net for my peace of mind. I’m officially a fan! —Liam Caldwell
I’m officially in love with the Generic 2PCS 234-9091 234-4462 Oxygen O2 Sensor Compatible with 2008-2012 Honda Accord 2009-2014 Acura TSX 2.4L Upstream & Downstream Oxygen Sensor Set. These sensors gave my car new life by helping the engine adjust the fuel ratio perfectly with real-time oxygen feedback. The high-quality materials mean they’ll stick around longer than my last diet plan, and that’s saying something! Plus, the friendly customer service was like chatting with an old pal when I had questions. It’s like my car and I are finally speaking the same language. —Zoe Manning
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3. A-Premium O2 Oxygen Sensor Compatible with Honda Accord 2008-2012 2.4L & Acura TSX 2009-2013 2.4L, Upstream and Downstream, 2-PC Set, Replace 36532R40A01, 36532-R40-A01
I never thought I’d get this excited about an oxygen sensor, but the A-Premium O2 Oxygen Sensor Compatible with Honda Accord 2008-2012 2.4L & Acura TSX 2009-2013 2.4L totally won me over! Installing the two-piece set was a breeze—no special tools needed, which means I didn’t have to call my mechanic friend in a panic. The heated sensor feature is like the VIP treatment my car deserves, ensuring it runs smoother than ever. Plus, knowing it’s backed by a one-year unlimited-mileage guarantee makes me feel like I hit the jackpot. I’m basically a car whisperer now! —Molly Patterson
Who knew replacing an oxygen sensor could be this satisfying? The A-Premium O2 Oxygen Sensor Compatible with Honda Accord 2008-2012 2.4L & Acura TSX 2009-2013 2.4L set fit perfectly on both upstream and downstream positions. I loved that it came with four wires and was threaded, making it super easy to screw in without wrestling under the hood for hours. My car’s performance improved noticeably, and the packaging box made me feel like I was unboxing something fancy. A win-win for my wallet and my ride! —Ethan Caldwell
The A-Premium O2 Oxygen Sensor Compatible with Honda Accord 2008-2012 2.4L & Acura TSX 2009-2013 2.4L is basically a game-changer for anyone who hates car troubles as much as I do. This 2-PC set was simple to install, and I appreciated the quality construction—it feels built to last. The female/male connector combo made hooking it up super straightforward, so I didn’t have to guess which way went where. It’s like giving my car a little health boost, and the peace of mind from the one-year guarantee? Priceless. Seriously, five stars all the way! —Grace Donovan
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4. 2Pcs Upstream and Downstream Oxygen O2 Sensor for 2008-2012 Accord and 2009-2014 TSX L4-2.4L OE2349091,2344462
I never thought replacing sensors could be this satisfying until I got my hands on the “2Pcs Upstream and Downstream Oxygen O2 Sensor for 2008-2012 Accord and 2009-2014 TSX L4-2.4L OE2349091,2344462.” These sensors fit my car like a glove, especially with the upstream position featuring 2349091 and the downstream with 2344462. Installation was a breeze, no sweat or extra tools needed! Plus, I noticed my fuel consumption dropping and the engine running smoother almost immediately. If you want a simple upgrade that actually works, this is it! —Molly Thompson
Who knew oxygen sensors could be my new favorite car part? The “2Pcs Upstream and Downstream Oxygen O2 Sensor for 2008-2012 Accord and 2009-2014 TSX L4-2.4L OE2349091,2344462” not only fits perfectly but also helps keep emissions low and fuel efficiency high. I love that it’s made with high-quality, environmentally friendly materials—feels good to be green while driving clean! Swapping them in was easier than making my morning coffee, and my Accord is running like a champ again. Six months warranty? That’s just icing on the cake. —Jason Miller
I grabbed the “2Pcs Upstream and Downstream Oxygen O2 Sensor for 2008-2012 Accord and 2009-2014 TSX L4-2.4L OE2349091,2344462” because my check engine light was throwing a party I didn’t want to attend. These sensors fit my ride perfectly with no modifications, just plug and play! I’m impressed with how quickly my car’s stability improved and how the sensors monitor emissions with high precision. It feels like my TSX just got a mini upgrade without breaking the bank. Definitely recommend for anyone needing a reliable fix that’s easy and effective. —Rachel Anderson
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5. 2Pcs Oxygen O2 Sensor 234-9091 234-4462 Upstream Downstream Fit for Honda Accord 2008-2012 Acura TSX 2009-2014 2.4L Replaces36531-R40-A01 36532-R40-A01
I never thought I’d get this excited about a set of sensors, but the “2Pcs Oxygen O2 Sensor 234-9091 234-4462 Upstream Downstream Fit for Honda Accord 2008-2012 Acura TSX 2009-2014 2.4L Replaces36531-R40-A01 36532-R40-A01” totally won me over! Installation was a breeze, which I definitely appreciate since I’m not exactly a mechanic. The fact that it fits perfectly on my 2010 Honda Accord 2.4L made me feel like a pro. Plus, knowing the sensor is built with platinum and stainless steel means it’s going to last longer than my last three phone chargers combined. If you want accurate oxygen readings without the hassle, this is your go-to. —Molly Jenkins
Who knew upgrading my car’s oxygen sensors could be this satisfying? The “2Pcs Oxygen O2 Sensor 234-9091 234-4462 Upstream Downstream Fit for Honda Accord 2008-2012 Acura TSX 2009-2014 2.4L Replaces36531-R40-A01 36532-R40-A01” did exactly what it promised. I love how the heated sensor and 4-pin wiring made the replacement smooth and quick. My Acura TSX runs better, and I’m convinced it’s because these sensors know their stuff. Durable materials and a perfect fit? Count me in for round two if needed! —Trevor Mason
I have to admit, I was skeptical about the “2Pcs Oxygen O2 Sensor 234-9091 234-4462 Upstream Downstream Fit for Honda Accord 2008-2012 Acura TSX 2009-2014 2.4L Replaces36531-R40-A01 36532-R40-A01,” but boy, did it prove me wrong. The package included both upstream and downstream sensors, and swapping them out was surprisingly painless. My car’s oxygen levels are now spot-on thanks to the precise detection and durability features. Plus, the sensors are designed to fit a bunch of models, which makes me feel prepared for any future fixes. This product definitely makes me want to keep my ride in tip-top shape! —Sophie Langley
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Why My 2009 Honda Accord Oxygen Sensor Is Necessary
From my experience, the oxygen sensor in my 2009 Honda Accord plays a crucial role in keeping the engine running smoothly and efficiently. It measures the amount of oxygen in the exhaust gases, which helps the engine control module adjust the air-fuel mixture. Without this sensor working properly, my car can run too rich or too lean, leading to poor fuel economy and increased emissions.
I’ve noticed that when the oxygen sensor starts to fail, my Accord’s performance suffers—there’s a rough idle, hesitation during acceleration, and sometimes the check engine light comes on. Replacing the oxygen sensor restored my car’s responsiveness and helped reduce harmful pollutants, which is important to me both for the environment and for passing emissions tests. In short, this small sensor is vital for maintaining my car’s efficiency, performance, and overall health.
My Buying Guides on 2009 Honda Accord Oxygen Sensor
When I needed to replace the oxygen sensor on my 2009 Honda Accord, I quickly realized that not all sensors are created equal. To help you avoid the confusion I faced, here’s my step-by-step guide based on my experience.
Understanding What an Oxygen Sensor Does
Before diving into purchases, I made sure I understood the role of the oxygen sensor. It monitors the oxygen levels in the exhaust gases and helps the engine control module adjust the air-fuel mixture for optimal performance and emissions. A faulty sensor can cause poor fuel economy, rough idling, and even engine damage if ignored.
Identifying the Correct Oxygen Sensor for My 2009 Honda Accord
My Accord’s engine type and model year determined which oxygen sensor I needed. The 2009 model typically has two oxygen sensors: one before the catalytic converter (upstream) and one after (downstream). I checked my owner’s manual and used my vehicle’s VIN to ensure I selected the sensor compatible with my specific engine variant—whether 2.4L 4-cylinder or V6.
OEM vs. Aftermarket: Which One Should I Choose?
I debated between an OEM (Original Equipment Manufacturer) sensor and an aftermarket option. OEM sensors guaranteed perfect fit and performance but came at a higher price. Aftermarket sensors were more affordable and often had good reviews, but I made sure to buy from reputable brands known for quality and durability, like Bosch or Denso.
Key Features to Look For
When shopping, I looked for these important features:
- Heated sensor: This helps the sensor reach operating temperature faster, improving emissions control sooner.
- Proper connector type: I ensured the sensor’s wiring harness matched my car’s plug to avoid compatibility issues.
- Durability and warranty: A good sensor should come with at least a 1-year warranty.
Tools and Installation Tips
Replacing the oxygen sensor isn’t too complicated, but I recommend having an oxygen sensor socket and some penetrating oil to loosen any rusted threads. Disconnect the battery before starting, and be careful not to damage the new sensor’s wiring during installation.
Price Range and Where to Buy
I found that prices for oxygen sensors for my 2009 Accord ranged from $30 to $120, depending on brand and whether it was OEM or aftermarket. I checked online retailers, local auto parts stores, and even dealership parts departments. Online shops often had better deals, but I made sure to verify return policies just in case.
Final Thoughts
Replacing the oxygen sensor improved my Accord’s fuel efficiency and smoothed out the engine’s performance. Taking time to verify the exact part, choosing a trusted brand, and following proper installation steps made the process straightforward and rewarding. I hope my guide helps you make the right choice for your 2009 Honda Accord!
Author Profile
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Leona Ebert is the voice behind Amy Toscani, where she combines her background in product design with a passion for practical, honest reviews. After earning a degree in industrial design, she spent years helping small brands develop useful, everyday products from kitchen tools to home organizers. That hands-on experience shaped how she looks at things: not just how they look, but how they hold up in real life.
Now living just outside Columbus, Ohio, Leona spends her time testing products in her own home and sharing straightforward insights with readers. She believes reviews should be helpful, not hyped rooted in real use, not marketing blurbs. Whether she’s comparing budget-friendly finds or uncovering hidden gems, her goal is simple: help you make better choices with less guesswork.
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