Volvo Renault 24V NOx Sensor 5WK97371 22827993, dedicated to after-treatment system

Volvo/Renault 24V nitrogen oxides sensor (OEM: 5WK97371 / 22827993) designed for diesel exhaust aftertreatment systems, installed on the exhaust pipe near the SCR catalyst. It monitors NOx concentration in the exhaust in real time and feeds data back to the ECU to precisely control urea injection, ensuring emissions compliance. This sensor suits Volvo FH/FM series and Renault trucks with 24V electrical systems. Installation difficulty is medium; estimated labor 0.5-1 hour. Pay attention to wiring routing and sensor tightening torque to effectively resolve dashboard NOx warning lights caused by sensor failure.