Technical EGR Valve

[Duggan 74]

Fiat Scudo Combi 120 M-Jet 8S MPV
2008
1997
Diesel
6 Gears

Hi.
I am new to this & need some advise please.
My Scudo is having EGR Valve problems. Have had 3 fitted now & after different amounts of time I keep getting Anti Polution fault coming up. When conected to the diagnostics it is a EGR fault.
The garage hasnt cleaned out the inlet manifold,
so my question is should this be done before fitting a new or reconditioned EGR Valve?

Any advice would be very much appreciated.

 

[T14086]

just because the computer says EGR it doesn't mean it is, I would take it to another garage because the 'root' problem obviously isn't getting fixed.

Has it ben regulary serviced at dealership, has it got a DPF?