15 B7: Winter Issue

Morning all,
To start it off, the car is being brought into VW later to get scanned.
Its -1 here this morning, and the car got warmed up a bit then started to take off. The Glow Plug light started flashing and its almost as if I went into limp mode. The CEL came on soon after.
Any ideas? The thing has half power, CEL is still on and the glow plug light went off.

Thanks,

Illinois runs bio diesel on all on road fuel, right? do you run any additives? I've heard bio diesel needs more anti-gel, when'd you fill up last?

Just a guess.

What did VW say? i had a bad glow plug on mine, but the glow plug light didn't flash - only the check engine light was on

VW Did a diagnostics and said they were ghost codes. Let it stay in the garage a few hours and poof, no more codes. Guessing it had to do something with a bit of Gel or something.
These next few fillups will have plenty of additive into it.