P0480 Fault Code - Cooling Fans?

[Husy]

Hi everyone,
Getting a P0480 using OBD11 scanner on my 2008 Mk5 GTI (BWA / EA113).
Large fan works (with AC on), but the small fan doesn’t seem to kick in. No overheating yet.
Has anyone else had this? Was it the main fan/module in the larger fan or something else?
Cheers 👍