This Nitrogen Oxide (NOx) sensor is a vital part of the engine's exhaust aftertreatment system, measuring the level of NOx pollutants in the exhaust gases. It provides crucial feedback to the engine control unit (ECU) to optimize the SCR system's performance and ensure emissions compliance. A faulty NOx sensor can lead to inaccurate emissions readings, triggering check engine lights, reduced engine performance, and potential failure to meet regulatory standards.
Always verify with serial number before ordering.
Parts Trading Company · Mumbai, Est. 1956 · Same-day dispatch · Ships worldwide · GST invoice included
From the same category — may also be needed
Full shipping information on regional pages · Air freight 2–12 days · GST invoice for India
Disconnect main battery before working on electrical components. Use dielectric grease on all connector pins. Check ground connections — most electrical faults trace to poor grounds. Test with multimeter before installing new parts.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
The initial sign of a failing NOx sensor is often the illumination of the check engine light, accompanied by diagnostic trouble codes related to emissions. If left unaddressed, the engine may enter a limp-home mode with reduced power, or the Selective Catalytic Reduction (SCR) system may become ineffective, leading to increased NOx emissions. This poses a risk of failing emissions inspections and potential regulatory penalties.
Ensure the exhaust system is cool before attempting to remove the old NOx sensor. Apply anti-seize compound sparingly to the threads of the new sensor to prevent seizing in the exhaust pipe.
When replacing a NOx sensor, it is recommended to inspect the Diesel Particulate Filter (DPF) and the SCR catalyst for any signs of clogging or damage.