Ford Focus Combi 2008 1.6tdci - 3uga

Hi!

Any ideea on how can I get rid of EGR circuit low?
Egr is woking fine, gas flow is ok, egu is reading it ok. No wiring problems. Egr brand new and gas cooler cleaned.

Is there any way that this could be due to another error such as intercooler bypass valve stuck close?