Advice for P1130

[r50loverPR]

So my pathfinder has had the code P1130 (swirl control valve solenoid) for a while, a mechanic and I have changed various parts and nothing seemed to stick so I decided to take it to another one to get a second opinion. After waiting 2 weeks he finally gets back to me and says the fuel injection pressure damper is whats causing it. Now obviously I'm not an experienced mechanic but from what I've read on the factory service manual and from other posts related to P1130 I don't see how this can have any correlation to the code. What I understand from the surface level diagnostic I performed was that the swirl control valve wasn't getting switched off once the required conditions were met, that's why I'm confused about this new mechanics diagnostic. Should I proceed with the repair or am I getting scammed?