How the Fiat AdBlue system works
Covers: Ducato vans and Ducato-based motorhomes, Doblo and Talento.
The Ducato's MultiJet SCR system uses a heated tank pump, dosing injector and NOx sensors. Motorhomes that sit unused are prone to crystallisation and pump faults.
Common Fiat AdBlue faults we see first
- Countdown messages after the van or motorhome has stood for weeks
- Crystallised injectors and lines
- Pump pressure faults
- NOx sensor failures
What we check before quoting
We check pump pressure build, injector condition and AdBlue quality — standing motorhomes often just need cleaning and repriming.
Send us the registration and the exact dashboard message or fault code by WhatsApp. We confirm the ECU type and whether the job is suitable before arranging a visit.
Who this is for
Ducato-based motorhomes leaving the UK permanently and race transporters are the most common off-road enquiries.
Important — legal position
Disabling or removing a working emissions control system on a vehicle used on UK public roads is not lawful and will fail an MOT. This service is only for vehicles used off-road, in competition, on private land or exported. Road-registered vehicles in UK use get diagnosis and repair instead.
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