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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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