Welcome to the VW AUDI Forum - VWAF.

Page 1 of 2 12 LastLast
Results 1 to 10 of 12
  1. #1
    Join Date
    Sep 2008
    Location
    Liverpool
    Posts
    10
    Post Thanks / Like
    Thanks
    0
    Thanked 1 Time in 1 Post

    P0234 Engine overboost Condition

    Hi Guys, Just bought a Mk5 140 tdi, no lights on when i got it and it drives around town superb loads of boost from the turbo and will rev all the way up.
    I get it on the motorway and try to accelerate next thing you know about 60-75 mph the car goes into limp mode. I have plugged in a cheap code reader and I am getting the P0234 Engine Overboost Condition code.
    I have done a ton of reading on here and the other gti forum regarding cleaning the Inlet Guide vanes in the turbo.
    I am just after a bit of advice regarding this, before I go whipping my turbo off and giving it a clean.
    is there any other faults that could cause these symptoms, ie put the turbo into an overboost position other than sticky IGV's?

    Thanks Dave.

  2. #2
    Join Date
    Jan 2007
    Location
    Nottingham, England
    Posts
    27,572
    Post Thanks / Like
    Thanks
    197
    Thanked 2,275 Times in 2,112 Posts

    Re: P0234 Engine overboost Condition

    If the turbo is wheezing and whining, it usually needs replacing, this is a massive problem on the BKD engine. There is s spray cleaning system available from Inotec that allows the vanes to be cleaned without removing the turbo, if this fails it is new turbo time.
    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:


    www.helpforheroes.org.uk

    Keep XH558 in the air
    www.vulcantothesky.org


  3. #3
    Join Date
    Sep 2008
    Location
    Liverpool
    Posts
    10
    Post Thanks / Like
    Thanks
    0
    Thanked 1 Time in 1 Post

    Re: P0234 Engine overboost Condition

    Cheers for the quick reply crasher, I will have a look into that spray cleaning solution now.
    BTW is this the only cause of the Engine overboost condition? or could it be a dodgy sensor?

  4. #4
    Join Date
    Sep 2008
    Location
    Liverpool
    Posts
    10
    Post Thanks / Like
    Thanks
    0
    Thanked 1 Time in 1 Post

    Re: P0234 Engine overboost Condition

    Just tried googling Inotec, to try and find a lead on this cleaning solution but to no avail, anything else that could point me in the right direction please crasher? Cheers for your time.

  5. #5
    Join Date
    Jan 2007
    Location
    Nottingham, England
    Posts
    27,572
    Post Thanks / Like
    Thanks
    197
    Thanked 2,275 Times in 2,112 Posts

    Re: P0234 Engine overboost Condition

    I can supply by mail order but not sure of the price until Monday when I can look on the works system.
    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:


    www.helpforheroes.org.uk

    Keep XH558 in the air
    www.vulcantothesky.org


  6. #6
    Join Date
    Sep 2008
    Location
    Liverpool
    Posts
    10
    Post Thanks / Like
    Thanks
    0
    Thanked 1 Time in 1 Post

    Re: P0234 Engine overboost Condition

    Crasher , Cheers. I will PM you my mobile, give me a text or leave a message on my phone( phones not allowed in work) and I will call you back during business hours and get it ordered. Thanks for your help.

  7. #7
    Join Date
    Sep 2008
    Location
    Liverpool
    Posts
    10
    Post Thanks / Like
    Thanks
    0
    Thanked 1 Time in 1 Post

    Re: P0234 Engine overboost Condition

    Update: Got the car up on ramps today and did a visual inspection of hoses , all seemed fine, worked the vanes by hand and didn't notice any sticking or noises, so took off the pipe with the MAP sensor fitted to it and what looks like oil started dripping out, cleaned the pipe, run a coule of kettles of boiling water over the map sensor refitted it and put the lot back together, took it for a very hard driving session on the motorway, and now can not get it to fail into limp mode now. Happy with the result, not so happy with oil being in the pipe between the cooler and inlet manifold and covering the MAP sensor. checked oil when I got home and it is about a litre overfull, going to drain a bit tomorrow, but now need to find out if this is the reason for the pipes having oil in or is this normal?
    Checked service history and oil was changed at VW dealers 700 miles ago.

  8. #8
    Join Date
    Jan 2007
    Location
    Nottingham, England
    Posts
    27,572
    Post Thanks / Like
    Thanks
    197
    Thanked 2,275 Times in 2,112 Posts

    Re: P0234 Engine overboost Condition

    Oil in the pipes is completely normal and nothing to worry about. Some comes out of the turbo and some from the crankcase breather.
    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:


    www.helpforheroes.org.uk

    Keep XH558 in the air
    www.vulcantothesky.org


  9. #9
    Join Date
    Sep 2008
    Location
    Liverpool
    Posts
    10
    Post Thanks / Like
    Thanks
    0
    Thanked 1 Time in 1 Post

    Re: P0234 Engine overboost Condition

    Cheers Crasher, thats put my mind at ease.

  10. #10
    Join Date
    Sep 2008
    Posts
    11
    Post Thanks / Like
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: P0234 Engine overboost Condition

    There is a fault with some of the 2.0 TDi's where the wiring from the boost sensor to the ECU has high resistance. To fix this we fit an adapter loom and clean all earth points along the N/S. Check the earth points to see if corroded.

 

 
Page 1 of 2 12 LastLast

Similar Threads

  1. Question Belt for Air Condition Unit?
    By karachi_kops in forum Audi A4 - B5 Forum - 1995 - 2002
    Replies: 2
    Last Post: 11-08-2008, 08:34 PM
  2. air condition
    By suomis in forum A6 - S6 - RS6 - - Archive Topics
    Replies: 3
    Last Post: 07-07-2008, 08:44 AM
  3. battery condition
    By waggy in forum A6 - S6 - RS6 - - Archive Topics
    Replies: 8
    Last Post: 30-05-2008, 08:42 PM
  4. P0234-turbo Overboast
    By jp4500 in forum Passat - B5 Forum - 1997 -2005
    Replies: 0
    Last Post: 17-04-2008, 06:18 PM
  5. Over Boost Code p0234
    By whiteturbo in forum Archive posts
    Replies: 0
    Last Post: 24-01-2008, 03:13 AM

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
  •  
Back to top






Disclaimer: VW Audi Forum is an "independant enthusiast website", and is in no way related to any of the Worldwide Volkswagen,Audi,Seat,Skoda,Bentley,Bugatti,or Lamborghini group of Companies. For official upto 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: 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, and Lamborghini. No image can be replicated by anyone WITHOUT the relevent Companies written permission.


VW Audi Forum is an AUTHORISED retailer for the Surf City Garage range of car care products


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.





Page copy protected against web site content infringement by Copyscape


- VW AUDI Forum - The No1 VW Audi Forum - Volkswagen (VW) - Audi - Seat - Skoda - Bentley - Bugatti - Lamborghini - Porsche - VW Audi Forum -


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