VW Caddy AdBlue Problems: Warning Lights, Fault Codes & Fixes
iFixAdBlue — Leicester & the Midlands VW Caddy AdBlue Problems: Warning Lights, Fault Codes & Fixes P20EE. P204F. A warning light that won’t clear. Here’s what’s actually going wrong with your Caddy’s AdBlue system — and what to do about it. By Jamie Hargreaves, Mobile AdBlue Specialist | Published 4 September 2026 | Updated 4 […]