Advice on Fault Dignostics

[Adi6pac]

Hi everyone I'm new to this forum and need some expert  advice please. My  Engine management light is displaying and its annoying. I've taken the car to  Audi to do a diagnostics and they have  suggested that there is an issue with the cooler egr valve v400 for my Audi A4 B8 2.0 Tdi.  I would like to clarify if v400 fault relates to a cooler pump issue .  I would like to clarify if v400 fault relates to a cooler pump issue . I'm planning to this privately but just wanted some advice if anyone had any similar issues. 

[Steve Q]

Issues with egr & egr coolers are common on modern vag Diesel engines unfortunately. I worked in a vw service department that's how I know.