Join my channel on Instagram as @manishcartechnology. Install the app to follow my photos a 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. 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. I scanned with vcds it shows this fault code: 02071 - Local Databus. 012 - Electrical Fault in Circuit. Freeze Frame: Fault Status: 01101100. Fault Priority: 3. Fault Frequency: 1. I checked all fuses and wires,also replaced the blower and module still the same. I guess it can be a Climatronic fault. 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. 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). 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 pQPg.

audi a6 c6 blower not working