Badger5Sky Insurance
Results 1 to 13 of 13
  1. #1
    1wheelonly's Avatar
    cabriolet

    Status
    Offline
    Join Date
    Oct 2007
    Location
    The Lounge
    Posts
    2,062

    FAULT CODE HELP PLEASE

    not getting any response from the a4 clan so i thought id ask the a3 lot as theres bloody hundreds of you.

    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: 000000000000000 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 17:56.
    LOTS DONE, LOTS SPENT !!!!

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    VRStu's Avatar
    Just Looking

    Status
    Offline
    Join Date
    Oct 2008
    Location
    Hampshire
    Posts
    1,064
    http://wiki.ross-tech.com/index.php/16804/P0420/001056

    16804/P0420/001056 - Catalyst System; Bank 1: Efficiency Below Threshold

    Possible Causes

    • Leakage in Intake and/or Exhaust System
    • Catalyst faulty
    • Oxygen Sensor(s) faulty
    • Oxygen Sensor(s) Control faulty
    Possible Solutions

    • Check Intake and Exhaust System for Leaks
    • Check Catalyst
    • Check Oxygen Sensor(s)
    • Check Oxygen Sensor(s) Control
      • Perform Oxygen Sensor(s) Aging Check
    Special Notes

    Retrieved from "http://wiki.ross-tech.com/index.php/16804/P0420/001056"
    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.

  4. #3
    1wheelonly's Avatar
    cabriolet

    Status
    Offline
    Join Date
    Oct 2007
    Location
    The Lounge
    Posts
    2,062
    sh*t looks costly!
    LOTS DONE, LOTS SPENT !!!!

  5. #4
    VRStu's Avatar
    Just Looking

    Status
    Offline
    Join Date
    Oct 2008
    Location
    Hampshire
    Posts
    1,064
    Are you on an OEM exhaust and if so is it leak free?

    If yes then I would suggest 02 sensor changed first.
    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.

  6. #5
    1wheelonly's Avatar
    cabriolet

    Status
    Offline
    Join Date
    Oct 2007
    Location
    The Lounge
    Posts
    2,062
    stu
    just had a suggestion that the cat might be buggered but just passed mot, thought they took readings.
    not long had new exhaust system OEM but only from cat back, would it need to be leeking before the cat.
    LOTS DONE, LOTS SPENT !!!!

  7. #6
    VRStu's Avatar
    Just Looking

    Status
    Offline
    Join Date
    Oct 2008
    Location
    Hampshire
    Posts
    1,064
    I think a leak anywhere from the manifold to the 02 sensor will cause an issue.

    There are some tests that can be carried out with VAS/VCDS to test the 02 sensors etc so it might be worth an hours labour if you can't do it yourself.
    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.

  8. #7
    1wheelonly's Avatar
    cabriolet

    Status
    Offline
    Join Date
    Oct 2007
    Location
    The Lounge
    Posts
    2,062
    ive got vagcom
    LOTS DONE, LOTS SPENT !!!!

  9. #8
    VRStu's Avatar
    Just Looking

    Status
    Offline
    Join Date
    Oct 2008
    Location
    Hampshire
    Posts
    1,064
    Ahh but do you know what tests to do
    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.

  10. #9
    1wheelonly's Avatar
    cabriolet

    Status
    Offline
    Join Date
    Oct 2007
    Location
    The Lounge
    Posts
    2,062
    do i bo**ox.
    kinda hoping you did though lol
    LOTS DONE, LOTS SPENT !!!!

  11. #10
    VRStu's Avatar
    Just Looking

    Status
    Offline
    Join Date
    Oct 2008
    Location
    Hampshire
    Posts
    1,064
    I'm afraid I don't have a great deal of 1.8T info.
    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.

  12. #11
    VRStu's Avatar
    Just Looking

    Status
    Offline
    Join Date
    Oct 2008
    Location
    Hampshire
    Posts
    1,064
    Actually I lie, I have just checked and I have the tests for the 1.8t AUQ.
    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.

  13. #12
    1wheelonly's Avatar
    cabriolet

    Status
    Offline
    Join Date
    Oct 2007
    Location
    The Lounge
    Posts
    2,062
    whats auq mate
    LOTS DONE, LOTS SPENT !!!!

  14. #13
    VRStu's Avatar
    Just Looking

    Status
    Offline
    Join Date
    Oct 2008
    Location
    Hampshire
    Posts
    1,064
    It's a variant of the 1.8t.

    I would think the tests would be ok for yours.

    PM me an email address and I'll send it over.
    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.

 

 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO