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A1 air con not working

rob0904 Aug 26, 2017

  1. rob0904

    rob0904 Member

    Hi, I've Just bought the misses a 2012 a1 tfsi sline sportback but the air con doesn't work.

    I've ran vcds and got:

    Refrigerant pressure sensor open or short to ground.

    The code comes out as b1282 which I can find on the net.

    So I've changed the the sensor in the air con pipe, Made no difference.

    What pressure should it be reading?

    I've checked the little bit of wiring and plug I can see.

    Is a regassing the next port of call or is there fuses and/or a relay I could be checking.

    Any help would be great

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  3. rob0904

    rob0904 Member

    Well checked the pressure in the system and that seems find.

    I unplugged the sensor to double check the plug but that all looked ok.

    While it was unplugged I cleared the codes. The same code came so defiantly a wiring issue.

    I've checked the fuses I can find next is try to run a fresh ground wire to see what that does.
  4. tyr382

    tyr382 Member

    First thing you want to make sure is the compressor clutch engaging at all. If so find the suction side of the System. If its warm or barley cold at all then you more then likely to have a stuck pressure regulator. Very common problem with dense and sanden compressors
    Very eazy to fix.
    But yeh fist thing you want to make sure is if you have a leak or. Not
    If there’s no leak then most definitely be your regulator
    Or a blockage some where which is very rare in most cases

    Sent from my iPhone using Tapatalk
  5. rob0904

    rob0904 Member

    Thanks for the information, I messed around In vagcom and managed to make it worse. The aircon button would stay lit. So I pulled all the fuses one by one, fired vagcom up and managed to do the basic settings again. Button now stays lit.

    I bought a cheap diy refill kit, refilled it and all so working again nice and cold.

    I should really get a proper clean and refill.

    Thanks again for the info.


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