Hi there,
I'm new to the world of Volvo (recently purchased a V60 D5) after coming from BMW (530d touring). I'm really pleased so far with the change, although the cars are both a very different drive!
Anyway, not sure if this will help, but I had exactly the same symptoms on my last BMW. I cleaned the EGR valve and it was working just fine. I also swapped the vacuum pipe which didn't help.
In the end my issue was a vacuum pump box which was not generating enough vacuum pressure and causing the error. Swapped and issue fixed.
I now Volvo engines are likely built completely differently, but I'm hoping it'll help with the diagnosis.
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