Check engine light EGR

[Vinhen]

Audi A5 tdi 2017, the amber check engine light returns after about 180 miles following regen and code p200 p200 cleared. Car divers well with no other issues does anyone have any ideas regarding this issue? It’s booked in to an authorised mechanic 23/4 who will carry out a full diagnostic and fix what’s required as it under warranty I’m just bit frustrated to know what the issue is 

[spartacus 68]

Probably blocked EGR valve. Code is P2002. If it’s under warranty, I’m assuming this is not main dealer but independent garage. Blocked EGR valve not necessarily reflective of previous owner, but start stop short run journeys won’t have helped. If EGR doesn’t sort it, then you might need DPF flushed. Full VCDS scan will reveal more as it could be a DPF pressure sensor or blocked AdBlue injector. To be honest I’d investigate further and check air intake manifold. The garage in question will need to spend a little time on labour and a gasket, but that’s belt and braces approach.

Edited 2 hours ago by spartacus 68