The AdBlue pump supplies pressure for the dosing system. A pump fault can stop the vehicle from delivering the required fluid.
What does it mean?
The AdBlue pump supplies pressure for the dosing system. A pump fault can stop the vehicle from delivering the required fluid.
Symptoms to look for
Warnings may include an SCR system fault, countdown, pressure message or no-start warning. The car may otherwise feel normal.
Possible causes
Pump wear, contamination, freezing damage, wiring, a blocked line, tank module fault or crystallisation can affect pressure.
What diagnostics check
Testing checks commanded and actual pressure, pump activation, wiring, fluid condition and whether the injector or line is restricted.
What should happen next?
A pump should not be replaced solely from a generic warning. S7 Remaps can help identify whether the pump, tank module or another part of the system needs attention. 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.