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Discussion Starter #1
was doing some code reading on my 2004 A4 convertible today and on quite a few systems had the error code

Single wire operation

the main systems were.
.
1. Central control saying rear left and right door in Single wire operation.
2. Instrument panel in Single wire operation.
3. HAVC Panel in Single wire operation​
.

is there a central can gateway on the Audi?

I'm at a loss.

thanks for you help in Advance :)
 
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