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EGR System: Insufficient Flow

rick28 Nov 14, 2009

  1. rick28

    rick28 Member

    Hi all

    I have a 2004 A3 2.0 TDI with 80,000 miles and my Emission Control System light has recently become lit. I have done a VAG COM scan and I am getting the following:

    1 Fault Found:
    16785 - EGR System: Insufficient Flow
    P0401 - 000 - - - Intermittent
    Freeze Frame:
    RPM: 1575 /min
    Torque: 44.0 Nm
    Speed: 55.0 km/h
    Load: 10.6 %
    Duty Cycle: 14.7 %
    Bin. Bits: 11000000
    Mass Air / Rev.: 315.0 mg/str

    I reset the code but it came back after about 30 miles worth of driving. I believe this could be down to the EGR valve needing a good clean. Would you agree or disagree? If you do agree, is there a good resource available for a step by step method to carry out this bound to be dirty job


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