Greetings,

My daughter's 2012 Panamera 4 has got a issue with the blower fan. Yesterday she reported a weird sound inside the vehicle, she thought it may be the radio (the AC still worked fine). Today the sound came back, but the fan blower no longer worked. I was able to run diagnostics on it and the AC system came back with 16 faults. The PSM reports a C12019 - no communication with the Air Conditioner regulator. After I reset the codes, to see if anything returns, the AC fan blower does come back on and makes a wheezing noise - the speed stays on low...Is this a case of the Blower Motor dying or dead? I have enclosed pics of the codes. Any input would be greatly appreciated!

 

Definitely sounds like a hard fault with the blower motor since you have mechanical fault codes. The wheezing noise is also a tell-tale sign that it's giving up the ghost.

These are 2 part numbers for fan housings:
970 573 912 00 fan housing 1
970 573 922 00

This could be the electric stepping motor for the mixing flap:
970 573 841 00

Regulator part number:
970 624 423 01

These are the distributor housing part numbers:
970 573 914 00 distributor housing /LL
970 573 915 00 distributor housing /RL
(not sure of /LL /RL meaning)