Volvo Truck 24V NOx Sensor 5WK97373 22827992 021558128 Original Specification

Volvo Trucks 24V NOx sensor (OEM 5WK97373, 22827992, 021558128) designed for OEM 24V electrical systems; installed on the exhaust after-treatment device. It continuously monitors NOx in exhaust and transmits signal to ECU to precisely control SCR urea dosing, ensuring emissions compliance. Installation requires attention to harness routing and fastening torque; estimated labor 0.5-1 hour. When the MIL lights, torque limits occur, or urea consumption is abnormal, sensor signal drift is usually the cause.