Audi A6 - Interior blower not working | HELLA
Audi
A6 (4F2/C6)
Model year: 2005 - 2011
Engine: 2.0 TFSI
Interior blower not working
Error in data bus communication
If the interior blower fails on the vehicles mentioned above, the cause may be a faulty pressure sensor in the air-conditioning system.
The blower output stage and the pressure sensor (see figure) use a shared signal line to communicate with the control units (Climatronic). If the sensor fails, communication is disrupted and the blower is no longer activated. The error code 2071 is then stored in the error memory.
If the blower fails, diagnostics should be carried out as follows:
- Check fuses
- Read out the error memory
- Check the parameter for the pressure sensor via the measured value blocks (the parameter should be around 5 bar when the air-conditioning system is filled and switched off)
- Check the control of the sensor and fan as necessary
Important safety notice
The following technical information and tips for practical use have been set up by HELLA in order to offer professional support to automotive workshops in their daily work. The information available here on this website is only to be used by appropriately trained specialist staff.
The reprinting, distribution, reproduction, exploitation in any form and disclosure of the contents of this document, even in part, is prohibited without our express written approval and indication of the source. The schematic illustrations, figures and descriptions are for explanation and presentation of the document text and cannot be used as a basis for installation or design. All rights reserved.
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