NOx (Nitrogen Oxide) sensors play an important role in your vehicle’s emissions control system, particularly on modern diesel vehicles fitted with AdBlue technology. When a NOx sensor develops a fault, it can trigger warning lights, affect engine performance and prevent the emissions system from operating correctly. At Shaikly Motor Company, we use advanced diagnostic equipment and manufacturer repair information to accurately diagnose NOx sensor faults. Before recommending replacement, we investigate the wider emissions system to ensure the sensor is the root cause of the problem rather than another underlying fault.