VolvoEngine Parts

2659849 Nox Sensor — Volvo FH12 FH16

This is a NOx sensor, a critical component of the exhaust aftertreatment system that measures the concentration of nitrogen oxides in the exhaust gases. It is built to precise electrochemical standards, providing accurate readings that differ significantly from a worn sensor which may drift or fail to respond. Observable symptoms of a failing NOx sensor include illuminated check engine lights, reduced engine power, and increased emissions.

Nox Sensor – Part No 2659849 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeNOx Sensor (Nitrogen Oxide Sensor)
MaterialCeramic, precious metals, stainless steel
ApplicationExhaust gas aftertreatment system
Service LifeReplace as indicated by diagnostic trouble codes
CompatibilityVolvo 2659849
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a failing NOx sensor is often a dashboard warning light related to emissions or engine performance. If ignored, the engine control unit may reduce power to protect the aftertreatment system, leading to drivability issues. Prolonged operation with a faulty sensor can result in increased emissions and potential damage to the catalytic converter or DPF.

Installation Tip

Apply anti-seize compound sparingly to the threads of the new sensor to prevent seizing in the exhaust pipe. Ensure the electrical connector is securely latched to prevent moisture ingress.

Service Note

When replacing a NOx sensor, it is advisable to check the Diesel Particulate Filter (DPF) for regeneration issues and inspect the SCR system for proper fluid levels and function.