P0087 & P2047 OBD II Codes after CEL and loss of power on 07 E320 Bluetec




Scanned it with Torque and a bluetooth OBDII scanner, and it came up with the following codes:
http://www.obd-codes.com/p0087
http://www.obd-codes.com/p2047
Some quick googling looks like it could be related to a fuel pump issue, but I haven't heard of too many of those with these engines.. Looking for some guidance.
Edit: Cross posting on the diesel forum

P2047 is for "Rail pressure monitoring via volume control valve- The rail pressure is too low".
The inlet port shutoff motor (M55) could put the engine to limp-home-mode if oil has leaked from the turbo like in the attached photo. M55 fault codes is 2530.



