How to tell if your NOx (Nitrogen oxide) sensor is bad?

The truck was diagnosed in this video is Freightliner Cascadia DD15 with one box. The nox sensor fault codes mentioned in this video are:
►SPN 3216 - FMI 14: NOx raw sensor does not support self diagnosis
► SPN 3057 - FMI 2: SCR outlet NOx sensor - Error
► SPN 520355 - FMI 14: NOx out sensor does not support self diagnosis
A nitrogen oxide sensor or NOx sensor is typically a high-temperature device built to detect nitrogen oxides in combustion environments such as an automobile, truck tailpipe or smokestack.
The term NOx represents several forms of nitrogen oxides such as NO (nitric oxide), NO2 (nitrogen dioxide) and N2O (nitrous oxide, also known as laughing gas). In a gasoline engine, NO is the most common form of NOx at around 93%, while NO2 is around 5% and the rest is N2O. There are other forms of NOx such as N2O4 (the dimer of NO2), which only exists at lower temperatures, and N2O5, for example.
More info: en.wikipedia.o...
FREE Trucker Calculator: ►bit.ly/3FzZ1RX
📢Exciting News:
Our online store is officially launched - Shop the largest collection of DPF, DOC, SCR & One Box at a price you will like! Use fan-exclusive promo code: road3333 for 5% off - limited time only!
► DPFDiscounter.com
Business Info:
Diesel Emissions Specialists offers expert diagnostics and repairs for diesel emissions aftertreatment systems. Rely on our skilled technicians for comprehensive solutions, including DPF cleaning, DOC, SCR, and One Box parts. Ensure your diesel engine runs efficiently with our top-tier services.
► www.emissionsp...
► Address: 1120 High Ave SW Canton, Ohio 44707
► Phone: [phone] (for business only)
► Email: [e-mail]
Shop the largest DPF, DOC, SCR & One Box collection at a price you will like!
► dpfdiscounter....
Get the most advanced electric APU power by Lithium Starting Batteries from Polar Fox Technologies today!
► www.polarfoxap...
Connect with us on Social Media Platforms:
► KZbin: bit.ly/35YO3kN
► Instagram: bit.ly/3C7hRy6
► TikTok: bit.ly/3QxGHMT
► Facebook Page: bit.ly/2QqBuZ0
► Threads: bit.ly/3KmNp6P
► Trucking Facebook Group: bit.ly/34TbQXQ
My Favorite Products for trucking & truck repair needs from Amazon:
► amzn.to/3xZkDn3
Awesome Products and Services We Recommend:
► OTR performance diagnostic tool (super easy scan tool every trucker needs) - use promo code road3333 to get $100 off: bit.ly/3O3wshT
► Rock Rooster offers the best work boots for you. Use channel-exclusive promo code road3333 to get 12% off of your order today. bit.ly/3HFLFDu
Want to work with our channel? Email us for more details
[e-mail]
-----Disclaimer-----
The information and instructions provided by Trucking & Fixing with Ryan KZbin channel is for general informational purposes only. All information on the channel is provided in good faith, however, we make no representation or warranty of any kind, express or implied, regarding the accuracy, adequacy, validity, reliability, availability, or completeness of any information on this channel. Some product links are affiliate links which means if you buy something we'll receive a small commission.