Audi A4 B7 TDi fault code

Discussion in 'Audi TDI forums' started by john Andrews, Sep 10, 2017.

  1. john Andrews

    john Andrews New Member

    Joined:
    Sep 4, 2016
    Messages:
    12
    Car:
    Audi A4 B7 2.0 TDi (uk) S-line Avant
    Location:
    witney, UK
    this time last year the dreaded 2.0 TDi balance shaft fault hit my car, ouch, it also took out the turbo...so a new one was obtained and fitted by the garage, however since that dat i have noticed more turbo lag than before and now i get the car going into limp home mode with flashing `glow plug` sysmbol on the dash...

    a friend read the codes last week and this is what we found:

    scaN/MAKE/EUROPE/audi/ Systems ,
    Control Unit, 01-Engine, Read Codes.
    Read Codes
    00665 Turbo/Super Charger Underboost - sporadic 006-Short to Plus.

    If anyone has any ideas please let me know, thankyou.

    (next cars going tobe a petrol!)

    John.
     
  2. Keithuk

    Keithuk Super Moderator

    Joined:
    Aug 29, 2010
    Messages:
    7,128
    Car:
    2010 Golf GTD (170) CBBB
    Location:
    Stoke on Trent, England
    Have you got a P code with that?

    VAG Error Code: 16683/11226/15343/5671/7384/000665

    EOBD II Error Code: P0299

    Fault Location:
    Boost Pressure Regulation - Control Range Not Reached/Low Boost

    Possible Cause:
    Malfunction Indicator Lamp (MIL)(K83) active.
    Reduced Power Output.
    Limp Mode.
    Limp mode: What is it, what are the causes, and how to fix it for the Audi and VW TDI diesel turbo.

    Hoses/Pipes incorrectly connected, disconnected or leaking.
    Charger Pressure Control defective.
    Turbocharger faulty.
    Diverter Valve faulty.

    Possible Solutions:
    Check Hoses/Pipes to/between Components.
    Check/Clean/Replace Charge Pressure Control.
    Check Turbocharger.
    Check Diverter Valve.

    Special Notes:
    If the Turbocharger is faulty due to mechanical/internal problems or the exhaust system is restricted (typically the Catalyst) this fault may be the end result.

    Gasoline:
    When found in 2.0l TFSI:
    Check Boost Pressure Control Valve (N249) (Turbocharger Recirculating Valve) for cracked rubber diaphragm. A new/optimized Valve is available under Part # 06H-145-710-D (or newer).
    Rest of World (RoW) vehicles see: Technical Product Information (TPI) 2016331 for details.
    North American Region (NAR) vehicles see: Technical Service Bulletin (TSB) 01-07-70 or 2013392 for details.
    When stored in conjunction with misfire codes and/or fuel trim faults see the notes associated with the following faults regarding Positive Crankcase Ventilation (PCV) failure: Crankcase Breather Valve
    When found in Audi A4/S4/RS4/Cabriolet (8K): 2.0l (CAEB):
    See Technical Product Information (TPI) 2031245/6 - turbocharger excessive waste-gate play.

    Diesel:
    When found in VW Golf/Jetta (1K): 2.0l CR-TDI (CBEA/CJAA):
    Verify the mechanical part of the Exhaust Valve Control Module (J883) is not seized or binding.
    When found in the 1.9 L TDI-PD (BLS):
    Check vacuum supply from the vacuum reservoir located in the valve cover for leaks. Using a vacuum gauge, wiggle the valve cover and hose connections to check for a leak. The following photo was submitted from a customer working on a 2010 VW Caddy (2K chassis) with this vacuum reservoir problem.





    As taken from my new Free EOBD II Error Codes software
     
  3. john Andrews

    john Andrews New Member

    Joined:
    Sep 4, 2016
    Messages:
    12
    Car:
    Audi A4 B7 2.0 TDi (uk) S-line Avant
    Location:
    witney, UK

    Hi keith, yes read car again today, as it happened again on way back from airport sunday, and P0299 code came up....thanks for your reply.

    john.
     

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