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

    Sep 4, 2016
    Audi A4 B7 2.0 TDi (uk) S-line Avant
    witney, UK
    this time last year the dreaded 2.0 TDi balance shaft fault hit my car, ouch, it also took out the 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!)

  2. Keithuk

    Keithuk Super Moderator

    Aug 29, 2010
    2010 Golf GTD (170) CBBB
    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.

    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.

    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

    Sep 4, 2016
    Audi A4 B7 2.0 TDi (uk) S-line Avant
    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.


Share This Page