An AdBlue fault is a problem detected in the vehicle's selective catalytic reduction system. The message alone does not identify which component has failed.
What does it mean?
An AdBlue fault is a problem detected in the vehicle's selective catalytic reduction system. The message alone does not identify which component has failed.
Symptoms to look for
Symptoms may include a warning light, countdown, increased emissions warning, no-start message or occasionally no obvious drivability change.
Possible causes
Common areas include the NOx sensor, dosing injector, pump, tank, heater, pressure circuit, wiring, fluid quality and crystallisation.
What diagnostics check
Proper diagnosis compares fault codes with live data, system pressure, dosing behaviour, temperature and the condition of connectors and components.
What should happen next?
A fault-code clear is not the same as a repair. S7 Remaps can assess the system and discuss compliant repair or servicing options. 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.