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Limp mode update after diagnostics.......help still required!

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by markfire, Jun 25, 2012.

  1. markfire
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    markfire New Member

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    [Jun 25, 2012]
    All

    Since i originally had my A4 3.0 Cab go into limp mode (not always, intermittent) i bit the bullet and bought the Vag-Com diagnostics cable.
    I cleared the faults and then drove the car for a while. I ran the auto scan again this morning and have got the the same results as previous. (Listed below)
    I have checked the fault codes on the website which give a list of checks to make and possible causes. My question here is, has any one else had these same symptoms and what the fix was.
    I can drive the car normally most of the time, however if i give it large (ish) amounts of gas, the next time i start it and drive it always goes into limp mode!

    Audi A4 3.0 Cabriolet (Quattro) 07'

    Here's the printout of the faults.

    Address 01: Engine Labels: Redir Fail!
    Part No SW: 8H0 910 401 A HW: 8E0 907 401 AL
    Component: 3.0L V6TDI G000AG 0060
    Revision: --H04--- Serial number:
    Coding: 0011171
    Shop #: WSC 00654 210 60918
    VCID: 2045C4C8F3D8C29
    2 Faults Found:


    013128 - Control Circuit for Controller for Turbocharger 1 (J724)
    P3348 - 004 - Electrical Malfunction - Intermittent
    Freeze Frame:
    Fault Status: 00100100
    Fault Priority: 0
    Fault Frequency: 3
    Mileage: 53869 km
    Time Indication: 0
    Freeze Frame:
    RPM: 756 /min
    Torque: 62.4 Nm
    Speed: 0.0 km/h
    Temperature: 87.3°C
    Duty Cycle: 50.1 %
    Voltage: 13.91 V
    Duty Cycle: 12.6 %


    001025 - EGR System
    P0401 - 002 - Insufficient Flow - Intermittent
    Freeze Frame:
    Fault Status: 00110010
    Fault Priority: 0
    Fault Frequency: 1
    Mileage: 54220 km
    Time Indication: 0
    Freeze Frame:
    RPM: 1638 /min
    Torque: 163.8 Nm
    Speed: 54.9 km/h
    Duty Cycle: 62.8 %
    Duty Cycle: 20.9 %
    (no units): 206.8
    Duty Cycle: 18.1 %
    Readiness: 0 0 0 0 0


    Any ideas and suggestions of how to get this fixed would be very welcome before i spent large amounts of hard earned cash going around the Audi houses and replacement parts division.

    regards

    Mark
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  3. Wrath
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    Wrath Well-Known Member

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    [Jun 25, 2012]
    Your EGR fault will be because the EGR is blocked. On the 2.0 it is easy to locate and clean yourself, not sure where it is on the 3.0.
    #2
  4. markfire
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    markfire New Member

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    [Jun 25, 2012]
    Thanks for the reply. It's booked in for an EGR clean, once it's done i'll report back. Will that fault put the car into limp mode without lights on dash?

    cheers
    Mark
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  5. Illusion-Paul
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    Illusion-Paul Member

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    [Jun 26, 2012]
    I am about to clean my EGR this weekend, seems easy to get to initially, underneath all the wires and tubes ....

    Hope your issues get fixed too.

    Paul
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  6. murran
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    murran Active Member

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    [Jun 27, 2012]
    id suggest it maybe more a problem with the turbo control system rather than the egr, as the fault frequency says 3 rather than 1 for the egr, plus the ecu first worked out there was a problem with the turbo 350km before the egr fault was logged.

    as for a solution without seeing the car and working thru the guided fault finding procedure............ your guess is as good as mine!
    #5
  7. markfire
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    markfire New Member

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    [Jun 28, 2012]
    Hi

    Thanks for your suggestions. As for the fault showing three on the turbo that's because I cleared the egr and not the turbo before run the car. It usually shows both at the same time. Do you know why the turbo fault occurs? I have noticed some oil around the right hand side of the engine and on the bottom of the water bottle. Looks like it could be a breather hose or one the hoses down on the right side of the engine.

    Regards

    Mark
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  8. c4a5er
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    c4a5er Member

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    [Jun 29, 2012]
    There are many reported incidents of turbo malfunction on the 3.0Tdi often resulting in its replacement. I think checking the electrical wiring/connection is about all you can do externally. A dealer can test the positioning motor function, not sure if this can be done with VCDS, maybe someone else knows?
    #7
  9. markfire
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    markfire New Member

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    [Jul 2, 2012]
    Thanks for your suggestions guys

    Regards

    Mark
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  10. Tabsy
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    Tabsy Member

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    [Feb 23, 2014]
    Mark did you ever get resolved? If so what was the fix for the actuator problem?
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  11. markfire
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    markfire New Member

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    [Feb 24, 2014]
    Got the car diagnosed at Audi
    Replaced the turbo pressure regulator and car has been good ever since.
    Fingers crossed : )
    #10

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