Egr codes

[Oldmanriver]

Hi all
Had these codes come up recently, not gone into limp mode yet, any advice appreciated. Not sure if the other two codes are related?

K

 

[Spaghetti]

My EGR code caused the AdBlue to error. Replaced the EGR and it cleared my AdBlue fault about 20k miles ago.

They both are there to reduce NOx, so if the EGR is choked, the NOx rises and the AdBlue has to work much harder to reduce NOx.