What does the AdBlue fault, text (red) symbol look like?

Red text AdBlue followed by a diagonal open-ended wrench. It is also called “AdBlue”, “AdBlue wrench”, “DEF”, “SCR” and “diesel exhaust fluid”.

AdBlue fault, text (red) symbol: red text AdBlue followed by a diagonal open-ended wrench

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AdBlue fault, text (red)

Red text AdBlue followed by a diagonal open-ended wrench. · also called “AdBlue”, “AdBlue wrench”, “DEF”, “SCR”, “diesel exhaust fluid”

What it means on audi

AdBlue system fault, urgent

The AdBlue emissions system needs attention straight away; carrying on risks damage to the engine or its exhaust-cleaning system. Only a dealer or qualified workshop can repair it.

Source · Independent reference Audi dashboard symbols and warning lights list (independent symbol reference website) · checked Nov 10, 2026

Where it appears

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Audi
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Questions about the AdBlue fault, text (red) symbol

What does the AdBlue fault, text (red) symbol mean on Audi cars?: The AdBlue emissions system needs attention straight away; carrying on risks damage to the engine or its exhaust-cleaning system. Only a dealer or qualified workshop can repair it.
What does the AdBlue fault, text (red) symbol look like?: Red text AdBlue followed by a diagonal open-ended wrench. It is also called “AdBlue”, “AdBlue wrench”, “DEF”, “SCR” and “diesel exhaust fluid”.

Checked against the source · Nov 10, 2026 · How we verify

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