This Nitrogen Oxide (NOx) sensor monitors the levels of nitrogen oxides in the exhaust gases, providing critical data to the engine control unit (ECU) for emissions regulation. Manufactured to meet rigorous Volvo standards, it offers precise readings superior to a worn sensor that may drift or fail. Operators might observe illuminated check engine lights, reduced engine power, or increased soot accumulation in the exhaust when this sensor malfunctions.
Always verify with serial number before ordering.
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Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
The first indication of a failing NOx sensor is often a check engine light accompanied by diagnostic trouble codes. If ignored, the engine's emissions control system may operate inefficiently, leading to increased particulate matter and potentially failing emissions tests. Continued operation without a functioning NOx sensor can result in engine derating and long-term damage to the exhaust aftertreatment system.
Ensure the exhaust system is cool before attempting removal and installation to avoid burns. Do not apply excessive force when threading the sensor into the exhaust pipe, as this can damage the threads.
Inspect the exhaust system for leaks and check the Diesel Particulate Filter (DPF) for excessive buildup when replacing the NOx sensor.