AdBlue crystallisation occurs when fluid dries and leaves deposits, which can restrict dosing components or affect connectors and lines.
What does it mean?
AdBlue crystallisation occurs when fluid dries and leaves deposits, which can restrict dosing components or affect connectors and lines.
Symptoms to look for
Deposits may be visible around the injector or filler area, with an AdBlue warning, dosing fault, pressure fault or countdown.
Possible causes
Leaks, poor dosing, incorrect shutdown behaviour, temperature changes or an existing component fault can allow deposits to form.
What diagnostics check
Inspection looks for deposits and leaks, while diagnosis checks pressure, dosing, injector operation and the associated fault memory.
What should happen next?
The correct response may involve cleaning, component replacement and fixing the cause of the deposit. S7 Remaps can explain the compliant solution after diagnosis. Do not use a software change to hide an unresolved mechanical or emissions-system fault. A proper diagnosis should establish the cause before a solution is chosen.
Related AdBlue support
Read the main AdBlue diagnostics and solutions service for mobile support across Preston, Lancashire and relevant nearby areas.
Frequently Asked Questions
It can. The exact warning depends on the vehicle and fault, so the stored codes and live data need to be interpreted rather than guessed from the dashboard message.