Rough running engine - Diagnostic help

[ulfilias]

Hi Guys,

The car is running rather rough :


Control Module Part Number: 4D0 907 559 C
Component and/or Version: 4.2L V8/5V G 0003
Software Coding: 10753
Work Shop Code: WSC 02314
Additional Info: WAUZZZ4DZ1N006219 AUZ7Z0Y1573840
7 Faults Found:
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-00 - -
16685 - Cylinder 1 Misfire Detected
P0301 - 35-00 - -
16687 - Cylinder 3 Misfire Detected
P0303 - 35-00 - -
16686 - Cylinder 2 Misfire Detected
P0302 - 35-00 - -
16688 - Cylinder 4 Misfire Detected
P0304 - 35-00 - -
16725 - Camshaft Position Sensor (G40): Implausible Signal
P0341 - 35-10 - - - Intermittent
17549 - Load Calculation Cross Check: Implausible Value
P1141 - 35-00 - -


It's a D2 s8 4.2 2000 AVP engine....Any ideas where to start looking ?

Ta,
Lee