02071 Audi A6 with no heater blower. I walk through my diagnostic thought process on this A6 logging 02071 communication fault with no heater blower more. Jul 30, 2021. #2. christopher barnes said: Hi guys, noticed my heater blower wasnt working, all direction and heat ok. No a/c. I tested the fan using a 12v supply which was fine so i then lazily ordered the heater resistor thinking that this was the fault. Audi A6 models built from 2005 to 2007 have be known for having an issue with its pump valve unit; in fact, a TSB ( 2013833/5) was issued, recommending replacement of the old unit with a newly updated model. The problem occurs when the pump valve becomes blocked with engine debris. A6 / S6 (C6 Platform) Discussion - AC blower not working (Special Situation) - One day my 07 2.8 (without solar roof) AC blower not working and the following codes found by VCDS: 01273- Fresh Air Blower (V2) 02023- Supply Voltage for control module for fresh air blower lower limit exceeded 01844- control module for 01273- Fresh Air Blower (V2) 02023- Supply Voltage for control. module for fresh air blower lower limit exceeded. 01844- control module for fresh air blower J126. i did search a lot of posts about this issue and the common faults of these codes are caused by faulty fan motor and blower resistor. How to replace air-con/heater air blower motor in Audi A6 (C6 4F) WheelsAndMotors 39.6K subscribers Subscribe 242K views 9 years ago Here's direct link to our website with description of .

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