Badger5Chris Nott
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  1. #1
    1wheelonly's Avatar
    cabriolet

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    FAULT CODE HELP PLEASE

    My ecu light keeps coming on, reset it a couple of times but it comes back so must have a fault.
    here is the fault from my scan, could anyone tell me what it means and what part i need to cure it,also whats involved to fit it.cheers

    Address 01: Engine Labels: None
    Part No SW: 8E0 909 518 AL HW: 8E0 909 018 A
    VIN: ooooooooooooooooo Mileage: 98780km/61379miles
    Component: 1.8L R4/5VT 0003
    Coding: 0011504
    Shop #: WSC 00672
    1 Fault Found:
    16804 - Catalyst System; Bank 1: Efficiency Below Threshold
    P0420 - 002 - Lower Limit Exceeded - Intermittent - MIL ON
    Readiness: 0000 0000
    Last edited by 1wheelonly; 17th November 2008 at 17:55.
    LOTS DONE, LOTS SPENT !!!!

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  3. #2
    1wheelonly's Avatar
    cabriolet

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    anyone?
    LOTS DONE, LOTS SPENT !!!!

  4. #3
    evilscotsman's Avatar
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    looks like your cat may be knackered obviously mate, if it was the o2 or lambda sensor it would mention that instead.

    And if I was you I would edit that post above to blank out your VIN number!!!! Thats begging to be used on a ringer by someone! After all, from your pic and that post they have your make, model, reg and VIN....
    B4 TDI - old skool project / daily driver...if it ain't broke, it's probably an Audi...


  5. #4
    J7USS's Avatar
    Shuddup Foooool!!

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    Too late, ive already bought his car!

  6. #5
    1wheelonly's Avatar
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    evil
    its been coming on for a while now, but it has just had an mot and passed, if the cat was gone wouldnt it of failed.

    j7uss
    on the ringer you just bought, is the cat any good and do you want to sell it? LOL
    LOTS DONE, LOTS SPENT !!!!

  7. #6
    J7USS's Avatar
    Shuddup Foooool!!

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    Haha! Nice one 1wheel, Ill have a look..

    If it passed MOT then like you say the cat should be OK.

  8. #7
    VRStu's Avatar
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    Quote Originally Posted by evilscotsman View Post
    looks like your cat may be knackered obviously mate, if it was the o2 or lambda sensor it would mention that instead.

    And if I was you I would edit that post above to blank out your VIN number!!!! Thats begging to be used on a ringer by someone! After all, from your pic and that post they have your make, model, reg and VIN....
    It's not a huge issue, the VIN is visible to anyone passing the car in the street as is the reg number.
    Stu.

    A4 3.0 TDi S-Line Quattro, 7 Speed S-Tronic, Quartz Grey, 19" Twin Spoke Alloys, Alcantara with Silver Stitching & Heating, Nav High, B & O, AMI, DAB, Parking Advanced & Rear View Camera, Advanced Keyless Entry, LED Interior Light Pack, Hill Hold Assist, Heated Electric Folding Mirrors, Through Load.

    Previous MY11 S3 Sportback Black Edition, S-Tronic, Ibis White.

  9. #8
    1wheelonly's Avatar
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    not long had a new oem system, but only from the cat back
    LOTS DONE, LOTS SPENT !!!!

  10. #9
    evilscotsman's Avatar
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    I wonder if the ecu's idea of a cat thats working poorly is still enough to pass an emissions sniffer test.....might not pass next time or even a months time - you never know.

    Just a thought as I reckon the dtc would have mentioned the o2 sensor or something like that, not "catalyst system efficiency below threshold" - which reads to me like "the cat doesnt seem to be working well enough" so thats why I think its that.
    B4 TDI - old skool project / daily driver...if it ain't broke, it's probably an Audi...


 

 

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