The ABS does register a fault in the Engine module if it has one stored.
The first three errors look historic (4000km ago)
07:09:12 G70 got implausible signal @1400rpm
07:09:25 Boost pressure not in range @2800rpm
07:09:41 G246 MAF 2 implausible signal @1134rpm
So on a timeline, the codes are appearing within in a 29 second window.
Hopefully just a boost pipe blew off on whichever bank gave the first code from G70 I would check everything from the turbos' outlets to the inlet manifold.?
Looking at SSP PDF for the 4.2tdi G246 and G70 are are the MAFs?
EDIT #59 here...
http://forum.a8parts.co.uk/showthread.php?t=9347