Air suspension error - C1047 07 [00001001] - Mechanical Failure

   #1  

Bigrobi

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Hello!
Thank you if anyone can help me! I'm not a car mechanic, just an enthusiastic amateur.
A6 C7, 2018 model year. The air suspension error appeared while driving.
The error: 677123 - Ride-Height System
C1047 07 [00001001] - Mechanical Failure
The green 40A fuse blew. We replaced it, but it didn't fix it.
We checked the compressor and the bleed valve, they seem to be working fine.
The height level sensors show correct values.
We replaced the air valve block, the error is the same.
The number of compressor overheatings is 0.
The system is not losing air.
In principle, everything works, but this C1047 error does not go away.
It returns immediately after clearing the error. (1-2 seconds)
What else could be the mechanical error?
I saw a similar topic, but there was no solution there.
Is it true that if the rear air spring is completely deflated, it can fail? What does this mean? If it keeps the pressure, can it still be bad?
Thank you very much if you can help!
 
   #3  

Bigrobi

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I'll describe what happened, in case I can help someone. Since the compressor seemed to be fine, but it still wouldn't let the air out, I took it apart. One of the filter balls somehow got through the filter and was just big enough to get stuck in the air passage, which it blocked. After I took it out, the mechanical problem went away, and the air suspension works fine.
 
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