Structured diagnosis
SCR components and related faults are assessed before file work.
SCR/AdBlue software treatment after full diagnosis and strict verification of permitted use.
AdBlue / SCR OFF affects a complex emissions system. Tank, pump, injector, NOx sensors and wiring require diagnosis; compliant repair remains the reference solution for a public-road vehicle.
SCR components and related faults are assessed before file work.
Related strategies are reviewed instead of merely clearing codes.
The regulatory framework is stated before acceptance.
Diagnose dosing, NOx sensors, temperatures, fluid quality and pressure.
Confirm legally permitted use, then treat supported strategies.
Review counters, DTC logic and operating data after flashing.