P20EE00: SCR NOx Efficiency Fault — Why It Triggers & What to Do
Fault code P20EE00 means the SCR catalyst isn’t reducing NOx as expected. It’s one of the most common AdBlue-related errors across vans, especially Mercedes, Ford, and VW models. Here’s what it means, how we diagnose it, and how to clear it for good. What the P20EE00 code means P20EE00 translates to “SCR NOx Catalyst Efficiency […]