I thought i would share this fault I have had twice now on my allroad.
I had this about 10 months ago when the car would raise OK but not lower resulting in me getting it stuck at level 4 with the Dash suspension error light on also posted on here, but it happened again yesterday,
Vag com fault:
01397 - Venting Solenoid for Level Control (N111)
31-00 - Open or Short to Ground
The last time it was a broken wire to the solinoid on the compressor which I joined and so I thought it would be my joint which had failed, but on investigation, it turned out to be a new break in the wire, on further investigation there had been a 3rd repair prior to me owning it and so these 2 wires going to the solenoid have caused some trouble now and in the past.
I thought I would post this to save others time if you have the same error as these wires may be prone to damage or breaking.
attached are some pictures in case any others have the same symptoms in the future.
1st shows the side to locate solenoid & compressor:Attachment 7694
Next is 2 wires going to solenoid, yellow wire being poory patched previous to my ownership:Attachment 7693
close up showing broken wire and previous join taped up:Attachment 7695
I removed the electrical plug and in true Audi Build i could neatly remove the connections from the housing and solder a new wire removing old jointed wire. Car goes down again :) great when you get a fix without costing ££££'s.:biglaugh: