Audi A6 4B V6 TDI error codes (12.98)

Hello everyone.

After a long time, I'm active again, and I have a question.

I found three errors in my friend's A6, and strangely, I can't find anything about them in the forum .

Okay, I can't delete the error message from the ABS system. The connector and cable seem to be okay so far.

18259 ABS control unit.


00604 climate


00852 radio/speaker

Does anyone have any information?


'Thank you.'

Hi Peter, here are a few starting points .


Error code.


18259 Data bus communication: Missing message from ABS control unit. P1851-35-10 Readiness: N/A.

Check the wiring and power supply, as well as the diagnostic cable of the ABS control unit. Most often, the problem lies in the diagnostic cable.

00604 - Potentiometer-driven actuator for the differential pressure control valve (G113).

Check cables, test motor, possibly replace.

00852 - Front speakers.
36-10 - Interruption.

Cable break in the door frame (door jamb)?

thank you

from behind

I can rule out a broken cable, because the speaker is working, which is strange, and it happens in all situations.

The air conditioning is working, but I'm going to take a closer look at the engine.


Okay, so ABS code 35 10 actually means intermittent, right? Then I should be able to clear the error, but I can't; it keeps coming back. The cables, connectors, and power supply seem to be okay.

Okay, now regarding the diagnostic interface, when I try to access the ABS control unit, my diagnostic tool tells me that it can't find any control unit. Consequently, the problem must now be either in the diagnostic cable or in the control unit itself, right?

If he's in the diagnostic area, where exactly is it located, and what are the colors?

'Thank you.'

Peter.