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The NOx sensor measures nitrogen oxide levels in the exhaust stream to enable precise emissions control, especially in diesel engines equipped with SCR (Selective Catalytic Reduction) systems. It provides real-time data that allows the ECU to adjust urea injection, combustion strategy, and after-treatment efficiency. Accurate NOx measurement is essential for meeting emissions regulations and maintaining proper engine performance.
When a NOx sensor fails due to soot accumulation, thermal shock, wiring damage, or internal degradation, it sends incorrect emissions data to the ECU. This results in increased NOx output, reduced SCR efficiency, higher fuel consumption, warning lights, and often a forced limp-home mode. Ignoring a faulty NOx sensor can lead to costly catalytic converter damage.
Porza supplies advanced NOx sensors engineered with high-temperature ceramic elements, corrosion-resistant housings, and precision digital output circuitry. Each Porza sensor is calibrated to OEM specifications for fast response and long-term exhaust environment durability. With Porza installed, emissions accuracy, engine efficiency, and regulatory compliance are fully restored.