Notices
 

  

User Tag List

Thread: Engine Light & Running Fan

Page 1 of 2 12 LastLast
Results 1 to 10 of 11
  1. Engine Light & Running Fan 
    #1
    Join Date
    Sep 2006
    Location
    Port Talbot, South Wales
    Posts
    107
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    26 Post(s)
    Hi Everyone,

    I've been away for a week but before I went the engine light on my BiTdi came on for a couple of days. I left it in the garage for the week I was away in the hope that it would clear itself. I got it out of the garage today, the light was still on and when I parked it on the drive a minute later the fan was running and kept on running for quite a while.

    I've noticed the fan running unnecessarily on a few occasions when the car has stopped but never had the engine light appear before. I'm assuming it's a sensor problem somewhere. Can anyone point me in the right direction and suggest what the problem might be?

    Thanks

    Jonathan
     
    0 0 0
     

  2. Re: Engine Light & Running Fan 
    #2
    Join Date
    Mar 2014
    Location
    Edinburgh
    Posts
    1,558
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    221 Post(s)
    The dpf is needing a regen.
    When the fan keeps running after you park up then the regen didnít finish.
    This normally happens when the car is used for short trips.
    Go for a long drive at high ish revs and it should clear. Beware that if you keep ignoring it thereís a point of no return and the dpf regen wonít work and will need replaced at a few grand.
     
    1 0 0
     

  3. Re: Engine Light & Running Fan 
    #3
    Join Date
    Sep 2006
    Location
    Port Talbot, South Wales
    Posts
    107
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    26 Post(s)
    Thanks for that A6S. Is there anyway I can clear the engine light without VCDS?
     
    0 0 0
     

  4. Re: Engine Light & Running Fan 
    #4
    Join Date
    Nov 2010
    Location
    Shetland & S.Tyneside
    Posts
    1,808
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    90 Post(s)
    If the engine light is on then there is a code logged and it will not clear itself, If you've been having frequent regens or fans running on and the EML light is on as opposed to the DPF light you need to get it scanned as you might have an EGR valve or cooler fault. Don't ignore it. You can clear the EML light and read codes with a cheaper OBDII scanner but diagnostics capability may be limited unless it is a better model.
     
    1 0 0
     

  5. Re: Engine Light & Running Fan 
    #5
    Join Date
    Mar 2014
    Location
    Edinburgh
    Posts
    1,558
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    221 Post(s)
    It will be worth getting a scan from any diag tool to see what the error is. Sooner rather than later. Audi parts like dpf or egr isnít cheap if they break.
    As said the better machines can do more than read and reset codes. The better ones can force a dpf regen rather than you driving about waiting for it to happen.
     
    1 0 0
     

  6. Engine Light & Running Fan 
    #6
    Join Date
    Sep 2006
    Location
    Port Talbot, South Wales
    Posts
    107
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    26 Post(s)
    Out of interest, how long does a regen take, either in time or miles? The car is booked in for diagnostic tomorrow.


    Sent from my iPhone using Tapatalk
     
    0 0 0
     

  7. Re: Engine Light & Running Fan 
    #7
    Join Date
    Nov 2009
    Location
    Stratford upon Avon UK
    Posts
    1,119
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    34 Post(s)
    If I get home and the regen is happeningI'll take it back out (if I have time) and drive around in "sport" mode. Usually seems to take about 20 - 25 minutes and that is driving at speeds above 40 MPH.
    I did read somewhere that regens only occur above 40 MPH - I don't think that is because of manifold temp, I suspect it's because they inject diesel into the exhaust to burn off the soot and you don't want to be doing that at low speeds in town etc.

    With the BiTdi you can tell when it is doing the regen even when driving.
    - In "D" mode you notice it holding lower gears even at 40 MPH. The exhaust note sounds a bit more sporty.
    - At 60 MPH in "D" the BiTdi will still be in 7th gear under moderate throttle - normally it would shift to 8th at that point.
    - If you have the lap timer enabled in VCDS then oil temp gives a clue. It will be significantly higher - so under normal driving where it might be in the 83C - 88C range you'll see it up at 93 - 94C

    So I drive around in "S" to keep everything nice and hot and then after a while on a flat piece of road drive at 60MPH and put it in "D". If it drops into 8th then it is done.
    A6 allroad BiTdi (MY14, July 2013 - DAB & power tailgate). Glacier white, tech pack (HDD Nav, colour DIS, Parking Plus), sports seats, 4 zone climate, heated seats front and rear, ambient lighting, 75L fuel tank, adaptive Bi Xenon headlights
     
    1 0 0
     

  8. Re: Engine Light & Running Fan 
    #8
    Join Date
    Apr 2009
    Location
    Surrey
    Posts
    2,166
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    40 Post(s)
    Quote Originally Posted by JonathanK View Post
    Out of interest, how long does a regen take, either in time or miles? The car is booked in for diagnostic tomorrow.


    Sent from my iPhone using Tapatalk
    I find a normal regen takes about 30 minutes, when I am aware it is happening which is usually in stop start traffic on my way to work and I see the idle speed is raised to about 1000rpm and the stop start does not activate. May take less time when making normal progree or on a motorway. It sounds like you need to do a forced regeneration and IIRC the manual suggests a trip of about 40 miles with highish engine revs
     
    0 0 0
     

  9. Re: Engine Light & Running Fan 
    #9
    Join Date
    Jun 2013
    Location
    Inverallochy, Aberdeenshire
    Posts
    46
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    5 Post(s)
    I am learning a bit here - I have noted when coming home from a 50 mile drive, a lot of which is currently 40 - 50 MPH due to road improvements, the fan keeps running - which really surprises me - but now that explains it - just not clear why after that long drive the dpf regen is not finished.
    I have only the 2.0 tdi manual, no engine warning lights - and I wish car manufacturers would let the driver know when the dpf regen starts and to drive at higher revs during this period - would perhaps save loads of grief with dpf's and EGR valves.
    I am on my second Audi A6 diesel, and have had no bother with either of them, but my older diesel SAAB used to get a lot of grief with choked EGR valve.

    Also makes it clear sometimes when I get to my destination the stop/start is blocked when I have a warm engine.
    2016 Audi A6 C7 - 2.0 TDI Sline Ultra - Moonlight Blue - No Tech Packs
     
    0 0 0
     

  10. Re: Engine Light & Running Fan 
    #10
    Join Date
    Apr 2009
    Location
    Surrey
    Posts
    2,166
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    40 Post(s)
    Quote Originally Posted by A6@georgemac View Post
    just not clear why after that long drive the dpf regen is not finished.
    Challenge is that the DPF may only have started a few minutes before you got home so it has not had the benefit of the full journey to do the regen. Only way to know if it is happening is that the idle rises to about 1000rpm from 800rpm and also the stop/start does not activiate and displays the crossed out "A" in the DIS (although that on its own is not necessarily evidence of a regen taking place)
     
    0 0 0
     

Page 1 of 2 12 LastLast

Similar Threads

  1. Rough running - engine management light on.
    By makemineamythos in forum Golf MK5 - 2004 - 2009
    Replies: 0
    Last Post: 06-09-2017, 10:36 AM
  2. Polo 1.4 16v engine light and rough running
    By AJB in forum Polo - Derby - Lupo - Fox
    Replies: 20
    Last Post: 17-10-2014, 08:13 PM
  3. intermittent engine light again running rich again
    By smithy602179 in forum Passat - B5 Forum - 1997 -2005
    Replies: 0
    Last Post: 24-11-2011, 05:20 PM
  4. Please Help Engine Light, Running Slighty Rough....
    By le19h in forum Audi A4 - B6 Forum - 2002 - 2005
    Replies: 0
    Last Post: 28-09-2009, 01:03 PM
  5. Running Rich engine managment light on
    By black_mk4_golf in forum Golf MK4 - 1999 - 2004
    Replies: 0
    Last Post: 12-10-2008, 01:36 AM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  




  


Disclaimer: VW Audi Forum is an "independant enthusiast website", administered in line with guidelines supplied by VAG in the UK, and is in no way related to any of the Worldwide Volkswagen,Audi,Seat,Skoda,Bentley,Bugatti,Porsche or Lamborghini group of Companies. For official up to date information on any of there vehicles, please visit the official websites. Any comments made throughout this website, are the views of the respective poster, and in no way represent the views of the VW Audi Forum Administration, or the worldwide Volkswagen & Audi Group of companies.


VW Audi Forum do not vet and are not responsible for any information which is posted in this forum. All content is viewed and used by you at your own risk and we do not warrant the accuracy or reliability of any of the information.


Copyright: Certain "words", "phrases" and "Images" used on this website by the Administration are "Copyright" of Volkswagen GB, Volkswagen AG (Germany), Audi GB, Audi AG (Germany), Volkswagen Motorsport GB, Volkswagen Motorsport AG (Germany), Audi Motorsport AG (Germany), Volkswagen Racing GB, Bentley, Bugatti, Porsche and Lamborghini. No image can be replicated by anyone WITHOUT the relevant Companies written permission.


All trademarks and copyrights remain property of their respective owners.

No part of the VW Audi Forum website or forum may be reproduced without written permission from the site administration


PLEASE NOTE - PERSONAL ABUSE, ABUSE AGAINST THIS OR ANY OTHER WEBSITE OR ANY COMPANY WILL NOT BE TOLERATED. OFFENDERS WILL BE MODERATED OR EVEN BANNED.


This website and forum are best viewed at a minimum resolution of 1024 by 768.



  



- VW AUDI Forum - The #1 Volkswagen (VW) Group Forum - Volkswagen (VW) - Audi - Seat - Skoda - Bentley - Bugatti - Lamborghini - Porsche - VW Audi Forum -


- www.vwaudiforum.co.uk - www.vwaudiforum.co.uk -