Error Code: Fault # 17055 - Cylinder 1 Glow Plug Circuit (Q10): Electrical Fault P067

My MIL went on this morning so i got out my $3 OBD cable (from eBay) and plugged in. I got this error code:

Fault # 17055 - Cylinder 1 Glow Plug Circuit (Q10): Electrical Fault
P0671 - 35-1 - -- Intermittent

Could someone tell me if they are familiar with this? Replace 1 glow plug? Whole assembly and controller?

I've cleared the code for now, and I'm crossing my fingers it won't come back. It was the first real freeze this morning (Victoria, BC), so I'm hoping this was the cause and I don't have anything to worry about!

In taking the Glow-Plug (GP) reading with Vag-Com The fault code give you #1 as defective.
The actual defective GP is #4 (driver's sdie of the engine).

Take a reading of all 4 GP's if the reading is good on all GP's then its the harness that is defective.