159 Cruiser and
AO Silver Member
Join Date: Jul 2012
Location: United Kingdom
Cleaning out the EGR (depending on how far it has gone), is often a temporary measure, I know my clean (without taking the solenoid out), was a short term fix.
Are you losing power at all? If you want to rule out the EGR, stick a bit of metal (from a drinks can) in the intake to it. If it is resolved, then you need a new EGR (the drinks can will throw up an error, but will not last long).
Check your maf too, and I would suggest a bottle of injector cleaner through the system and an italian clean up (in case it is the DPF reducing the outflow.
159 1.9JTDM Ti and Giulietta 2.0 Veloce
ex: Punto 55s, Golf Mk5 1.4FSi, A3 (8P) Sportback 2.0TDi SE, A4 (B8) 2.0TDI S-Line, 306 HDI Meridian