What I see with this. You had the oil galley gaskets replaced because of them being blown.
Questions.
How did you know they was blown? Did they hook up a separate gauge to read oil pressure?
Did they remove the timing chains to get to the galley gaskets? The Cam timing could be off if they removed the chains.
What the helll does this mean?
They replaced the fuel pump because the manual gauge still said low oil pressure.
You have low oil pressure, so they replaced the fuel pump? Or they replaced the oil pump? And you just typed wrong? Just trying to get the facts straight.
You still have low oil pressure. This could be causing you limp mode.
Don't think the cams are going to move in limp mode. Everything is in basic settings.
My guess is that they will end up going beck into the motor to check the new gaskets to make sure they are installed right and not leaking. And to check cam timing with the chains. They missed something inside. One other thing. There is chance that the oil pressure sensor is bad.