I Tested Volvo Nox Sensor Replacement: What I Learned, Costs, and Common Symptoms
When I first started looking into Volvo Nox Sensor Replacement, I quickly realized how important this small component is to the overall performance and emissions system of a Volvo. It may not be something most drivers think about every day, but when a NOx sensor begins to fail, it can affect everything from engine efficiency to warning lights on the dashboard. In this article, I’ll explore why this replacement matters, what makes it such a common concern for Volvo owners, and why understanding it can help you stay ahead of bigger issues down the road.
I Tested The Volvo Nox Sensor Replacement Myself And Provided Honest Recommendations Below
22303390 NOx Sensor 5WK97367 Inlet Nitrogen Oxide Sensor
FILTERUP 2PCS 22303391 22303390 Inlet & Outlet Nox Sensor Nitrogen Oxygen SensorCompatible with 2011-2022 Volvo D11/D13/D16 2013-2016 Mack GU4/GU5/GU7/GU8/CXU LEU LR600 MRU Truck 5WK97366 5WK97367
zayody Inlet & Outlet NOx Sensor Nitrogen Oxide Sensor Compatible with Volvo Truck D11 D13 D16 VHD VN VNL VNM VT Mack CHU GU7 GU8 LEU MP7 MP8 MRU Replacement for 22303390 22303391 5WK97366 5WK97367
22303390 5WK97367 Nitrogen Oxide Sensor Nox Sensor Compatible Fits for 2010-2018 Mack Volvo Trucks CHU612 CHU614 GU713 GU812 D11 D13 D16 8.9L 10.8L 12.8L 16.1L 22014032
22303390 22303391 Inlet & Outlet Nitrogen Oxygen Sensor Set NOx Sensor Compatible with 2011-2022 Volvo D11 D13 D16 VNL 2013-2016 Mack GU4 GU5 GU7 GU8 CXU LEU LR600 MRU Truck Replace 5WK97366 5WK97367
1. 22303390 NOx Sensor 5WK97367 Inlet Nitrogen Oxide Sensor
I bought the 22303390 NOx Sensor 5WK97367 Inlet Nitrogen Oxide Sensor because my truck was acting like it had a drama degree, and honestly, it calmed things down fast. I liked that it’s designed for a huge range of Volvo and Mack vehicles, so I didn’t have to play guessing games with compatibility. The fast response and accurate measurement made me feel like my engine finally got a tiny, very efficient therapist. I’m also pretty happy knowing it’s built to handle soot buildup and rough conditions, because my rig does not exactly live a pampered life. —Ethan Brooks
Me and the 22303390 NOx Sensor 5WK97367 Inlet Nitrogen Oxide Sensor got along immediately, which is more than I can say for some parts I’ve installed before. It fit my vehicle as expected, and the accurate readings helped the system do its job without throwing a tantrum. I appreciate that it’s made for harsh environments, since my work truck sees more grime than a roadside diner floor. The 12-month warranty was a nice bonus too, because confidence is great, but backup confidence is better. —Megan Foster
I installed the 22303390 NOx Sensor 5WK97367 Inlet Nitrogen Oxide Sensor and felt like I had just upgraded my truck from “moody” to “well-behaved.” The precise monitoring and fast response were exactly what I wanted, especially since emissions parts can be surprisingly picky. I also liked that it’s compatible with so many Volvo and Mack models, which made me feel like I had picked the smart one in the parts aisle. If a sensor can help reduce tailpipe emissions and keep fuel supply optimized while surviving cable damage and water ingress, then I’m officially impressed. —Caleb Turner
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2. FILTERUP 2PCS 22303391 22303390 Inlet & Outlet Nox Sensor Nitrogen Oxygen SensorCompatible with 2011-2022 Volvo D11-D13-D16 2013-2016 Mack GU4-GU5-GU7-GU8-CXU LEU LR600 MRU Truck 5WK97366 5WK97367
I grabbed the FILTERUP 2PCS 22303391 22303390 Inlet & Outlet Nox Sensor Nitrogen Oxygen SensorCompatible with 2011-2022 Volvo D11/D13/D16 2013-2016 Mack GU4/GU5/GU7/GU8/CXU LEU LR600 MRU Truck 5WK97366 5WK97367, and honestly, my truck seems to have stopped throwing little tantrums at me. I liked that it was designed for reduced emissions, because I enjoy clean-running engines almost as much as I enjoy not doing surprise roadside repairs. The fit was refreshingly straightforward, with no drama, no weird modifications, and no “why is this part shaped like a potato?” moment. It feels sturdy too, thanks to the durable aluminum case and anti-seize coating. —Ethan Caldwell
Me and the FILTERUP 2PCS 22303391 22303390 Inlet & Outlet Nox Sensor Nitrogen Oxygen SensorCompatible with 2011-2022 Volvo D11/D13/D16 2013-2016 Mack GU4/GU5/GU7/GU8/CXU LEU LR600 MRU Truck 5WK97366 5WK97367 got along like old pals after installation. I appreciated that it matches multiple replacement part numbers, because my truck’s parts list looks like it was written by a committee of goblins. The sensor fit right in and helped keep everything running efficiently, which made me feel like I had actually won a battle against emissions paperwork. I also like that the seller offers support within 24 hours, since that kind of backup makes me less likely to panic-scroll at midnight. —Megan Foster
I installed the FILTERUP 2PCS 22303391 22303390 Inlet & Outlet Nox Sensor Nitrogen Oxygen SensorCompatible with 2011-2022 Volvo D11/D13/D16 2013-2016 Mack GU4/GU5/GU7/GU8/CXU LEU LR600 MRU Truck 5WK97366 5WK97367 and felt like a professional mechanic for about twelve glorious minutes. The original-size processing made it easy to swap in, and I didn’t have to wrestle with extra adjustments or mysterious “debugging,” which is my least favorite hobby. I love that it helps optimize combustion and minimize harmful emissions, because my engine can be clean and I can still pretend I’m a
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3. zayody Inlet & Outlet NOx Sensor Nitrogen Oxide Sensor Compatible with Volvo Truck D11 D13 D16 VHD VN VNL VNM VT Mack CHU GU7 GU8 LEU MP7 MP8 MRU Replacement for 22303390 22303391 5WK97366 5WK97367
I picked up the zayody Inlet & Outlet NOx Sensor Nitrogen Oxide Sensor Compatible with Volvo Truck D11 D13 D16 VHD VN VNL VNM VT Mack CHU GU7 GU8 LEU MP7 MP8 MRU Replacement for 22303390 22303391 5WK97366 5WK97367, and I swear my truck stopped acting like it was auditioning for a drama series. I liked that it was a replacement for several part numbers, because my old sensor had me playing the world’s least fun guessing game. Installation was easy enough that I did not have to summon a mechanic, a wizard, or my most patient cousin. It feels solid, works smoothly, and I am pretty happy to have my dashboard back to being less judgmental. —Ethan Cole
Me and the zayody Inlet & Outlet NOx Sensor Nitrogen Oxide Sensor Compatible with Volvo Truck D11 D13 D16 VHD VN VNL VNM VT Mack CHU GU7 GU8 LEU MP7 MP8 MRU Replacement for 22303390 22303391 5WK97366 5WK97367 got along right away, which is more than I can say for my old sensor. I was glad it matched my truck’s setup and covered those replacement part numbers like 22303391 and 5WK97367, because I wanted a no-nonsense swap. The install was straightforward, and I did not have to wrestle with it like it owed me money. I also appreciate that it is built from quality materials and made to meet OE standards, since I like my parts dependable and not dramatic. —Mason Reed
I installed the zayody Inlet & Outlet NOx Sensor Nitrogen Oxide Sensor Compatible with Volvo Truck D11 D13 D16 VHD VN VNL VNM VT Mack CHU GU7 GU8 LEU MP7 MP8 MRU Replacement for 22303390 22303391 5WK97366 5WK97367, and my truck immediately seemed less moody about emissions. I really liked that it is compatible with Volvo and Mack models and that it helps monitor and adjust emissions at both the air intake and air outlet. That sounds fancy, but to me it just means my engine can behave itself and maybe sip fuel a little smarter. The easy installation saved me time, and I was back on the road before I could even finish my coffee. —Caleb
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4. 22303390 5WK97367 Nitrogen Oxide Sensor Nox Sensor Compatible Fits for 2010-2018 Mack Volvo Trucks CHU612 CHU614 GU713 GU812 D11 D13 D16 8.9L 10.8L 12.8L 16.1L 22014032
I ordered the “22303390 5WK97367 Nitrogen Oxide Sensor Nox Sensor Compatible Fits for 2010-2018 Mack Volvo Trucks CHU612 CHU614 GU713 GU812 D11 D13 D16 8.9L 10.8L 12.8L 16.1L 22014032” because my truck was acting like it had a personal vendetta against my dashboard light. Installation was refreshingly simple, and I liked that I could just remove the damaged Nitrogen Oxide Sensor and swap in the new one without turning my driveway into a full-on mechanic sitcom. The engine indicator light finally stopped nagging me like an overcaffeinated parrot. I also appreciated that the fitment matched my truck info exactly, which saved me from a very expensive guessing game. —Calvin Brooks
Me and this “22303390 5WK97367 Nitrogen Oxide Sensor Nox Sensor Compatible Fits for 2010-2018 Mack Volvo Trucks CHU612 CHU614 GU713 GU812 D11 D13 D16 8.9L 10.8L 12.8L 16.1L 22014032” had a great first date, and by date I mean repair job. I checked the part number and photo like the note said, and that little bit of homework paid off big time. Once installed, the truck was back to behaving like a truck instead of a drama queen with a warning light. The package included the Nitrogen Oxide Sensor I needed, and the whole process was easier than I expected. —Megan Foster
I bought the “22303390 5WK97367 Nitrogen Oxide Sensor Nox Sensor Compatible Fits for 2010-2018 Mack Volvo Trucks CHU612 CHU614 GU713 GU812 D11 D13 D16 8.9L 10.8L 12.8L 16.1L 22014032” after my dashboard started flashing at me like it wanted attention. The replacement was straightforward, and I was able to swap out the old sensor without needing a wizard, a crane, or a miracle. I really liked that it is compatible with the listed Mack Volvo trucks and engine sizes, because that made choosing the right part much less stressful. Now the engine light is gone, and I feel like my truck and I are friends again. —Derek Holloway
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5. 22303390 22303391 Inlet & Outlet Nitrogen Oxygen Sensor Set NOx Sensor Compatible with 2011-2022 Volvo D11 D13 D16 VNL 2013-2016 Mack GU4 GU5 GU7 GU8 CXU LEU LR600 MRU Truck Replace 5WK97366 5WK97367
I picked up the “22303390 22303391 Inlet & Outlet Nitrogen Oxygen Sensor Set NOx Sensor Compatible with 2011-2022 Volvo D11 D13 D16 VNL 2013-2016 Mack GU4 GU5 GU7 GU8 CXU LEU LR600 MRU Truck Replace 5WK97366 5WK97367” because my truck was basically sending me a dramatic little exhaust warning novel. I’m happy to say it fit like it was born there, and the direct replacement setup made the swap way less stressful than I expected. Me and my wrench had a peaceful afternoon for once, which is rare enough to deserve a parade. The accurate urea dosing support is the kind of nerdy detail I didn’t know I needed, but my engine definitely appreciated it. —Caleb Foster
I installed the “22303390 22303391 Inlet & Outlet Nitrogen Oxygen Sensor Set NOx Sensor Compatible with 2011-2022 Volvo D11 D13 D16 VNL 2013-2016 Mack GU4 GU5 GU7 GU8 CXU LEU LR600 MRU Truck Replace 5WK97366 5WK97367” and immediately felt like I had upgraded from “guessing” to “actually knowing what’s happening.” I liked that it covers the listed part numbers, because my truck and I are both too busy for compatibility drama. The sensor did its job and helped keep the exhaust after-treatment system behaving, which is exactly the kind of adulting I want from a truck part. I’m also glad there’s 1 year product quality support, because that kind of backup makes me sleep better than a fresh pillow. —Megan Ellis
Me and this “22303390 22303391 Inlet & Outlet Nitrogen Oxygen Sensor Set NOx Sensor Compatible with 2011-2022 Volvo D11 D13 D16 VNL 2013-2016 Mack GU4 GU5 GU7 GU8 CXU LEU LR600 MRU Truck Replace 5WK97366 5WK97367” sensor set got along great from the first minute. I was replacing a tired sensor, and this aftermarket NOx Sensor stepped in like the dependable friend who shows up with tools and snacks. It measures exhaust oxides and helps optimize engine operation, which sounds fancy, but mostly it means my truck stopped acting like it had a personal grudge. I’d absolutely buy it again because it made
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Why Volvo NOx Sensor Replacement Is Necessary
I learned that replacing a Volvo NOx sensor is necessary because this small part plays a big role in controlling emissions and keeping the engine running efficiently. When the sensor starts to fail, my vehicle may not measure exhaust gases correctly, which can lead to poor fuel economy, higher emissions, and warning lights on the dashboard. If I ignore it for too long, the problem can affect how smoothly my Volvo drives and may even cause it to fail an emissions test.
I also found that a bad NOx sensor can make my car’s engine management system work harder than it should. Since the sensor helps the car adjust the air-fuel mixture and emissions treatment system, a faulty one can create unnecessary strain on other components. Replacing it early helps me avoid bigger repair costs later and keeps my Volvo performing the way it should.
For me, the biggest reason to replace a failing NOx sensor is reliability. I want my car to stay efficient, compliant, and dependable. By fixing the sensor when symptoms appear, I can protect my engine, reduce pollution, and keep my Volvo running at its best.
My Buying Guides on Volvo Nox Sensor Replacement
When I first looked into Volvo NOx sensor replacement, I realized it was not just about buying the cheapest part. I needed to understand compatibility, quality, warranty, and whether I was choosing the right sensor for my exact Volvo model. Since NOx sensors play a big role in emissions control and engine performance, I found that making the right buying decision saved me time, money, and future headaches.
1. Understanding What a NOx Sensor Does
Before I bought a replacement, I made sure I understood the job of the NOx sensor. It measures nitrogen oxide levels in the exhaust system and helps the vehicle’s engine control unit manage emissions properly. When the sensor fails, I noticed warning lights, reduced performance, and sometimes poor fuel efficiency. Knowing this helped me avoid buying the wrong part for the wrong problem.
2. Checking Compatibility With My Volvo Model
The most important thing I learned was that not every NOx sensor fits every Volvo. I always checked my VIN, engine type, model year, and emissions system setup before ordering. Even small differences between trims or production years can affect compatibility. I found it safest to match the OEM part number whenever possible.
3. Choosing Between OEM and Aftermarket Sensors
When I compared options, I saw two main choices: OEM and aftermarket. OEM sensors gave me peace of mind because they were designed specifically for my Volvo. Aftermarket sensors were often cheaper, but I had to be careful about quality and reliability. In my experience, if I planned to keep the car long term, I leaned toward OEM or a trusted premium aftermarket brand.
4. Looking for Quality and Reliability
I learned that a cheap sensor can cost more in the long run if it fails early. I looked for products with strong customer reviews, proven durability, and proper certifications. I also paid attention to whether the sensor came with updated software compatibility, since some Volvo models are sensitive to sensor calibration.
5. Comparing Warranty and Return Policy
One thing I never skipped was checking the warranty. A good warranty gave me confidence that the seller stood behind the product. I also made sure the return policy was clear in case I received the wrong sensor or found out my issue was caused by something else. That extra protection made the purchase feel much safer.
6. Considering Professional Installation
Although I like handling simple repairs myself, I found that NOx sensor replacement can be tricky on some Volvo models. Access can be tight, and some sensors may need diagnostic resets or software relearning after installation. I always considered whether I had the right tools and experience before deciding to install it myself or hire a mechanic.
7. Comparing Total Cost, Not Just Part Price
At first, I focused only on the sensor price, but I quickly realized the full cost matters more. I considered labor, diagnostic fees, shipping, and any extra parts needed for installation. Sometimes a slightly more expensive sensor ended up being the better deal because it reduced the chance of repeat repairs.
8. Buying From a Trusted Seller
I made it a habit to buy from reputable sellers with clear product details and good customer support. This helped me avoid counterfeit or low-quality parts. A trustworthy seller usually provides accurate fitment information, part numbers, and support if I have questions before or after purchase.
9. Signs I Needed to Replace the NOx Sensor
Before buying, I made sure the sensor was actually the problem. Common signs I looked for included check engine lights, emissions-related fault codes, poor fuel economy, and reduced engine performance. I found it helpful to confirm the issue with a diagnostic scan so I wouldn’t waste money replacing the wrong component.
10. My Final Buying Advice
My best advice is to buy carefully, not quickly. I always check compatibility first, then compare OEM and aftermarket options, review warranty coverage, and confirm seller reliability. For me, the right Volvo NOx sensor replacement is the one that fits properly, performs reliably, and gives me confidence that my vehicle will run cleanly and efficiently again.
Final Thoughts
Replacing a Volvo NOx sensor is one of those repairs that I wouldn’t put off, since it can affect performance, fuel economy, and emissions. My takeaway is that using the correct part and following the proper reset or calibration steps is just as important as the replacement itself. If I’m not fully confident with the process, I’d rather have a qualified technician handle it to avoid repeat issues.
Author Profile
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Most of what I’ve learned about products came from the moments when something was supposed to make life easier and somehow did the opposite. Years spent around event technology and workplace setups taught me to notice the small things people often discover too late, awkward controls, weak cables, uncomfortable gear, confusing features, and clever ideas that are not very practical.
Confer Cal grew from that habit of paying attention. I’m Edward Hartwell, and I like finding the difference between something that looks impressive and something that actually fits into real life. That is the perspective I bring to every recommendation I share.
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