NOx Level One of the common signs of component failure is changes in fuel consumption. If you suddenly burn more diesel, it may mean that the nitrogen oxide sensor is faulty and needs to be replaced in time. Note when replacing: Turn off the vehicle power supply and check the wiring harness power supply before replacement to prevent a disconnection fault. Remember to delete the original fault code after replacement. Our Nox sensors are your best choice! It has high quality, long service life and advanced production technology. It has the advantages of stable performance, responsiveness, and excellent stability and durability. And direct replacement, it only takes a few minutes to complete the appropriate design and installation. The upgraded smart oxide sensor is equipped with an advanced chip to support a more accurate monitoring range and improve engine performance. [Notes] Before purchasing, please check whether the photos and part numbers match the old product to ensure that the product is suitable for your vehicle. If you have any questions, please feel free to leave us a message[Worry-free after-sales] We promise to provide you with excellent service, just contact us via Amazon message and we will reply you within 24 hours