Zafira 1.7d egr problem

[Andy1733]

Hi all.  

Ive had the car go into intermittent limp mode on several occasions.  I stop,  After approx 30 minutes I restart the car and it's fine. 

 

I've done a scan on my 2012 zafira 1.7d and I'm getting a 0400-62 code.  Which suggests egr valve.

I changed the egr valve for a new one, cleared the code,  the car ran fine for 5 days.   Then went into limp mode with the same code.   Can anyone suggest the next thing to check please.