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Thread: A6 P2279 Fault

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  1. Question A6 P2279 Fault 
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    Hello 👋

    Hope someone can help. I have a 2014 A6 2.0tdi ultra S/line s/tronic automatic with 49000 miles which has developed a P2279 fault (flashing amber glow plug warning light). When the problem initially occurred I was accelerating on an on slip to join the motorway. The car then went into limp mode.

    I pulled over restarted the car and the fault seemed to be reset. However on accelerating again up to 2k revs the same thing happened. I know the code refers to a vacuum leak and as a result had it checked with a smoke machine but this didnít show up any leaks. Iíve also tried giving the car a good run (70 miles in 4th gear) in an effort to reset the DPF but this hasnít solved it either.

    Urban driving doesnít activate the fault and very gentle accelerating up to about 70-80mph doesnít activate the fault also.

    December last year the Adblue pump was renewed and Iíve had no Adblue warning so far which is unusual after this length of time. But not sure if this is linked.

    Thanks for any help.
     
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  2. Re: A6 P2279 Fault 
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    You are in the wrong forum you need to post this in the C7 forum.

    This should give you a bit of an idea.

    18711/P2279/008825 - Ross-Tech Wiki
    Dan
    2009/2010 2.0 TDIe SE
     
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  3. Re: A6 P2279 Fault 
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    Thanks Dan
     
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  4. Question A6 P2279 code 
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    Hello 👋

    Hope someone can help. I have a 2014 A6 2.0tdi ultra S/line s/tronic automatic with 49000 miles which has developed a P2279 fault (flashing amber glow plug warning light). When the problem initially occurred I was accelerating on an on slip to join the motorway. The car then went into limp mode.

    I pulled over restarted the car and the fault seemed to be reset. However on accelerating again up to 2k revs the same thing happened. I know the code refers to a vacuum leak and as a result had it checked with a smoke machine but this didnít show up any leaks. Iíve also tried giving the car a good run (70 miles in 4th gear) in an effort to reset the DPF but this hasnít solved it either.

    Urban driving doesnít activate the fault and very gentle accelerating up to about 70-80mph doesnít activate the fault also.

    December last year the Adblue pump was renewed and Iíve had no Adblue warning so far which is unusual after this length of time. But not sure if this is linked.

    Thanks for any help.
     
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  5. Re: A6 P2279 code 
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    Sound similar to my old golf. Car was detecting it was over boosting then went to limp mode. If itís like the old turbo actuators itís controlled with a vacuum pipe.
     
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  6. Re: A6 P2279 code 
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    I am a bit suspicious of that code on that engine, what was it retrieved with?
    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

    W.H. Auden (1907-1973), A Curse:
     
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  7. Re: A6 P2279 code 
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    initially I used a handheld Konnwei OBD device. Following that a friend ran it through a diagnostic computer at his work where it returned P227900 fault code. That also returned a historic fault from April P200200 (DPF fault).
     
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  8. Re: A6 P2279 code 
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    My suspicions may be wrong but I would like to see the result of a VAG specific code read carried out with VCDS or ODIS.
    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

    W.H. Auden (1907-1973), A Curse:
     
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  9. Re: A6 P2279 code 
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    Thanks Crasher. I’ll try that ��
     
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  10. Re: A6 P2279 code 
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    New development.

    Fault cleared itself and ran trouble free since last update. Had 1/4 tank of fuel at that point. Fuelled it today to half a tank and as soon as I joined the motorway fault resurfaced. Checked back and noticed I had fuelled the car shortly before the fault developed first time round.

    Any ideas would be welcome. Thanks
     
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