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A4 B7 DPF codes

a4man Jan 6, 2012

  1. a4man

    a4man New Member

    Ive got a 2007 A4 B7 with the 2.0 TDI PD 170 engine done 62500 miles

    Was driving and the DPF light came on so i held it above 2200 rpm for 50 minutes or so to self regenerate then the engine management light and the glow plug light came on.

    got it plugged in to VCDS and it came up with a fault code of 008194

    Here the full vcds log

    1 Fault Found:
    008194 - Particulate Trap Bank 1: Efficiency Below Threshold
    P2002 - 006 - Short to Plus
    Freeze Frame:
    Fault Status: 11010001
    Fault Priority: 5
    Fault Frequency: 3
    Reset counter: 40
    Mileage: 0 km
    Time Indication: 0
    Freeze Frame:
    RPM: 0 /min
    Torque: 144.0 Nm
    Speed: 0.0 km/h
    (no units): 1.0
    Lambda: 77.3 %
    Pressure: 0.0 mbar
    Time: 439.3 s
    Readiness: N/A

    Can anyone please help with this?

  2. RickH

    RickH New Member VCDS Map User

    [h=1]18434/P2002/008194[/h] [TABLE="class: toc"]
    [TD][h=2]Contents[/h] [hide]

    [h=2]18434/P2002/008194 - Particle Filter Bank 1: Malfunction[/h] [h=4]Possible Symptoms[/h]
    • Malfunction Indication Lamp (MIL) active
    [h=4]Possible Causes[/h]
    • Exhaust Pressure Sensor (G450) faulty
    • Diesel Particle Filter (DPF) faulty
    [h=4]Possible Solutions[/h]
    • Check/Replace Exhaust Pressure Sensor (G450)
    • Diesel Particle Filter (DPF)
    [h=4]Special Notes[/h]
    • Skoda Superb (3U) & VW Passat (3B) (Engine Codes: BGW, BSS, BWW) had issues with faulty Exhaust Pressure Sensors (G450), they were defective from factory and due to a leaking sealing the measured values were incorrect and resultet in wrong calculated particle filter load and unsuccessful regeneration cycles.
    That's what Ross-Tec say about it if that helps
  3. a4man

    a4man New Member

    Cheers for that we did the Measuring blocks and the dpf was 91.7% full so we did a forced regen which took it down to 0,2 % soot level, so were hoping that was all it was and hopefully the g450 sensor is ok.


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