Egr problems?

[njitsver]

Hello,

I drive a v50 1.6d 110 hp from 2009.
Recently i have some troublecodes coming back and the official volvo dealer can't pinpoint the problem.
Dpf is replaced 15000 km's ago by dealer.
Enolys kit is topped up 5000 km's ago by dealer.
Since the troublecodes the dealer repaced the egr-valve.
I did replace the dpf sensor yesterday by myself, but the problem is not gone. It keeps throwing this codes.
The codes always comes when motor is warm on the freeway close after regen, altought i did have it twice without regen at front.
The troublecodes disapear after restart.


The troublecodes are;
obd: p 2141 exhaust gas recirculation throttle control circuit A low
p 0488 exhaust gas recirculation throttle control circuit A range/performance
volvocodes: ECM 9130 inlet control valve
ECM 9140 inlet control valve

Can someone help me pinpoint the problem please?

best regards