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Thread: A Unknown Fault code

  1. #1
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    A Unknown Fault code

    Hi
    I hoping that someone will be able to help me with is fault code as it is coming up unknown fault in my reader the code is 0041D8 on a polo tdi 2010

    Thanks

  2. #2
    Administrator Keithuk's Avatar
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    Quote Originally Posted by Rjphyton View Post
    Hi
    I hoping that someone will be able to help me with is fault code as it is coming up unknown fault in my reader the code is 0041D8 on a polo tdi 2010
    First posts normally go in introductions else you could get a free fix and we never see you again!!!

    Your car spec says 0. Is that your 2010 Polo TDI or are you trying to fix this error code for someone else?

    What was that error code taken from VAG-COM\VCDS or a cheap generic scanner as it isn't listed in my new EOBD II Fault Codes Software
    2010 Golf GTD (170) CBBB, 5 Door, Shadow Blue (P6/D5Q), Transmission Code: KXZ, Flat Tyre Indicator, Basic Protection Pack + VCDS.


  3. #3
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    Convert from hexadecimal to decimal and you'll probably find it. 16856 in decimal.
    Gone

  4. #4
    Administrator Keithuk's Avatar
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    Quote Originally Posted by Pete1 View Post
    Convert from hexadecimal to decimal and you'll probably find it. 16856 in decimal.
    You don't have to convert hexadecimal to decimal with VAG-COM\VCDS it does it for you.

    VAG Error Code: 16856/001138
    EOBD II Error Code: P0472

    Fault Location:
    Exhaust Gas Pressure Sensor 1 (G450) - Signal too Low/Short Circuit to Earth

    Possible Cause:
    Malfunction Indicator Lamp (MIL)(K83) active.

    Fuse(s).
    Wiring/Connector(s) short to earth.
    Exhaust Gas Pressure Sensor 1 (G450).
    Engine Control Module (ECM).

    Possible Solutions:
    Check/Replace Fuse(s).
    Check Coolant Fan Control Module (J293).
    Read Measuring Value Blocks (MVB) (MVB) 102.3 - actual pressure..

    Tech Notes:
    Replacing the exhaust back pressure usually takes care of the problem.

    When is the code detected?:
    An Exhaust Back Pressure (EBP) signal that is detected out of range (high or low) by the Engine Control Module (ECM) will cause the engine to ignore the Exhaust Back Pressure (EBP) signal and disable exhaust back pressure operation.

    Description:
    The Exhaust Back Pressure (EBP) sensor is a variable capacitance sensor that, when supplied with a 5-volt reference signal from the Engine Control Module (ECM), produces a linear analogue voltage signal that indicates pressure.

    The Exhaust Back Pressure (EBP) sensor's primary function is to measure exhaust back pressure so that the Engine Control Module (ECM) can control the Exhaust Back Pressure Regulator (EPR) when needed.


    As taken from my new EOBD II Fault Codes Software
    2010 Golf GTD (170) CBBB, 5 Door, Shadow Blue (P6/D5Q), Transmission Code: KXZ, Flat Tyre Indicator, Basic Protection Pack + VCDS.


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  6. #5
    Administrator Crasher's Avatar
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    Looks like you need a new DPF pressure sensor and possibly a forced regeneration after that
    2003 Skoda Octavia VRS Estate. APR 98RON remap, APR R1 diverter valve, Jetex exhaust, K&N panel filter, 7.5x18 Alutec Monstr wheels with 225/40 18 Uniroyal Rainsport 3 tyres.
    2006 Polo GTI 1.8T, APR 95RON remap
    1988 Golf 2 GTI 16 valve, 2.2 with Weber Alpha injection
    1983 Golf 1 GTI 8 valve, 2 litre with Eurospec racing 42/36 head
    1972 1302LS auto 1641cc conversion

    Vile Invention

    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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  8. #6
    Administrator Keithuk's Avatar
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    Johnny P - you can please yourself if you dislike my post, I've just stating the bleeding obvious.
    2010 Golf GTD (170) CBBB, 5 Door, Shadow Blue (P6/D5Q), Transmission Code: KXZ, Flat Tyre Indicator, Basic Protection Pack + VCDS.


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