I just replaced the driver's door on my 2002 A4 1.8t wagon - and now none of the power windows work. Fuses are good, there is power in the door window module, the red lock light is blinking, and the door open dome lights are on. I get a VAG code ofc01331 - Door Control Module - Driver side j386 49 no communication. Since all four windows are doing nothing - I am thinking it is a relay somewhere or the wiring connection at the door. Anyone have any ideas on if there is a power window relay and how to test it? I can see under the dash a six slot relay bar with the following: 167, X, 53, 373,X,370.

thanks for any insight.