Low pressure sensor is the first step in diagnosing this issue. Then they move on to the plugs,coils injectors. They tried that BS with me and I told them I would pick my car up and take care of it myself.
I replaced the faulty MOSFETs on the ECU (mine happened to be 1&2) and then changed out one of the coils (ECU took it with it). $80 later my car is up and running. Never will I take my car back to the dealership, I am out of warranty and their while goose chase diagnostics end up being pricey. The pathetic thing is the fault code clearly states 'Internal Electronic Malfunction' (something like that) and they look at fueling first.