P2563 error

[JJdun]

Coming on here because I am out of ideas, I have an 2.0tdi 2009 (140) and it has a glow plug light that comes on as soon as the car is started and stays on and sometimes an engine light and the code is p2563. I changed the turbo actuator,the egr, n75. Didn’t work so I took it to a specialist and they tested the turbo and actuator and was working fine and boosting. They then said it was the egr intercooler which I got changed and the lights are still on the dash. When you clear the code it comes back on a few seconds after the engine is started and the engine makes a slightly different noise when the coil light re appears. I just can’t seem to get any answers or solutions so was just seeing if anyone has had the same issue and fixed it…