AdBlue (DEF / SCR)

Emissions

urea injection for NOx reduction — AdBlue (urea solution) injected into exhaust on modern diesels to break down NOx via SCR catalyst. Crystallization, NOx sensor failures, dosing pump issues common. DaVinci AdBlue Off available.

Tune AdBlue (DEF / SCR) with DaVinci Deluxe

Professional ECU tuning software. €299 lifetime, 10 min free trial.

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Related terms

DPF (Diesel Particulate Filter)
soot filter on diesel exhaust
EGR (Exhaust Gas Recirculation)
recirculates exhaust into intake
SCR (Selective Catalytic Reduction)
NOx-reducing catalyst with AdBlue
AGR (Abgasrückführung)
German term for EGR
FAP (Filtre à Particules)
French term for DPF

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