Anyone ever run into a 2234 fault code?

Tue May 23 12:19:15 EDT 2006

"2234 (Blink Fault Code), VAG1551/2 Fault Code Number 00532 Supply Voltage Problem, ECU supply voltage too low or too high"

This started showing up right after I upgraded to RS2 software. No real instructions I could find to diagnose and fix the problem. Anyone else ever pull this code? Battery and charging system are all up to snuff. No running or drivability problems at all, just a constant CEL.

TIA,

Ben