The DELPHI NOx sensor, part number ANS1056-12B1, is a critical component for modern diesel vehicles equipped with Selective Catalytic Reduction (SCR) systems. It plays a vital role in monitoring nitrogen oxide (NOx) emissions, allowing the vehicle's engine control unit (ECU) to optimize the urea injection process. Accurate NOx readings are essential for meeting stringent emissions regulations and ensuring the efficient operation of the SCR system. By precisely measuring NOx levels, this sensor helps to reduce harmful pollutants released into the atmosphere. This sensor is engineered for durability and reliable performance in demanding automotive environments. Its integration into the urea injection system contributes to overall vehicle efficiency and environmental compliance.