Anyone seen this before?

Chassis Type: 8D - Audi A4 B5
Scan: 01,02,03,08,15,17,25,35,45,55,56

Address 01: Engine
Controller: 8D0 907 558 DA
Component: 1.8L R4/5VT MOTR HS D01
Coding: 04201
Shop #: WSC 06325
1 Fault Found:
01247 - Activated Charcoal Filter (EVAP) System Solenoid Valve 1 (N80)
26-10 - Output Open - Intermittent
Readiness: N/A

Bloody annoying [img]/ubbthreads/images/graemlins/burningmad.gif[/img]

It doesn't seem to make any difference to anything but it won't go away. I've looked for a possible cause but can't find anything and every time I clear the fault it comes back. I know it will keep coming back until I find the cause of the fault but I'm stumped [img]/ubbthreads/images/graemlins/frown.gif[/img]

Any ideas chaps?