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  1. Sherlock Holmes? DPF and EGR 
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    I have a 2006 Passat B6

    170 bhp BMR engine code

    It has 223,000 miles on the clock

    For the last 5 years I have been running it on a diesel/waste veg oil mix, approx. 80,000 miles in that time.
    Service the car, change oil approx. every 6000 miles.

    Summer mix 50/50 diesel/veg oil
    Winter 90/10

    Loads of engine lights came on last Saturday.

    CEL, flashing coil, DPF. Limp mode limited to 3000 rpm

    Read the codes with dongle VAG COM, though bought on ebay 10 years ago so not licensed.

    The DPF was replaced last year with a new one and has only done 15,000 miles or so.

    Codes as follows:

    001649 - Cylinder 1 Glow PlugCircuit (Q10)

    P0671 - 006 - Electrical Fault - MILON
    Freeze Frame:
    Fault Status: 11100001
    Fault Priority: 1
    Fault Frequency: 7
    Reset counter: 40
    Mileage: 358097 km
    Time Indication: 0
    Date: 2000.00.00
    Time: 08:14:09
    Freeze Frame:
    RPM: 0 /min
    Torque: 0.0 Nm
    Speed: 0.0 km/h
    0.00 %
    Voltage: 11.98 V
    Bin. Bits: 00110000
    Temperature: 14.0C

    001025 - EGR System
    P0401 - 006 - Insufficient Flow- Intermittent
    Freeze Frame:
    Fault Status: 00000001
    Fault Priority: 1
    Fault Frequency: 5
    Reset counter: 40
    Mileage: 358427 km
    Time Indication: 0
    Date: 2000.00.00
    Freeze Frame:
    RPM: 1376 /min
    Torque: 32.0 Nm
    Speed: 34.0 km/h
    84.63 %
    95.55 %
    Mass Air / Rev.: 337.9mg/str
    Mass Air / Rev.: 485.1mg/str

    012600 - Intake Manifold RunnerControl
    P3138 - 006 - RegulationDeviation - Intermittent
    Freeze Frame:
    Fault Status: 00000001
    Fault Priority: 5
    Fault Frequency: 1
    Reset counter: 38
    Mileage: 358389 km
    Time Indication: 0
    Date: 2000.00.00
    Time: 08:18:17
    Freeze Frame:
    RPM: 928 /min
    Torque: 40.0 Nm
    Speed: 0.0 km/h
    Mass Air / Rev.: 359.7mg/str
    Mass Air / Rev.: 468.7mg/str
    Lambda: -23.4 %

    008194 - Particulate Trap Bank 1
    P2002 - 006 - Efficiency BelowThreshold
    Freeze Frame:
    Fault Status: 11010001
    Fault Priority: 5
    Fault Frequency: 5
    Reset counter: 40
    Mileage: 358716 km
    Time Indication: 0
    Date: 2000.00.00
    Time: 09:50:08
    Freeze Frame:
    RPM: 0 /min
    Torque: 0.0 Nm
    Speed: 0.0 km/h
    (no units): 2.0
    Pressure: 0.0 mbar
    Lambda: 136.6 %
    Time: 5091.8 s

    000387 - Fuel Temp. Sensor A(G81)
    P0183 - 006 - Open or Short toPlus - Intermittent
    Freeze Frame:
    Fault Status: 00010001
    Fault Priority: 1
    Fault Frequency: 1
    Reset counter: 40
    Mileage: 358716 km
    Time Indication: 0
    Date: 2000.00.00
    Time: 09:50:21
    Freeze Frame:
    RPM: 1312 /min
    Torque: 72.0 Nm
    Speed: 11.0 km/h
    24.96 %
    Voltage: 14.24 V
    Temperature: -30.0C
    Temperature: 85.0C


    So, replaced all glow plugs as they were the original ones when the car was new. Replaced with NGK's

    Took off anti-shudder valve and cleaned.
    Took off EGR and cleaned. Checked the mechanism which works fine.
    Changed the exhaust pressure sensor G450 and re-set with VAG COM.

    Only codes now are the DPF particle trap below efficiency. Can't get out of limp mode.
    Have tried to force a regen on the move (wife loves me!) but the DPF won't regen.
    Have never done a stationary regen but would it work?

    Any suggestions?

    I think I should go to a VW specialist to get this done.
    Any recommendations in the Sheffield area?
    I know Crasher is in Nottingham and have gone to him before but I don't really fancy going on the motorway in limp mode , 20 mph up a gradient!


     
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  2. Re: Sherlock Holmes? DPF and EGR 
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    Well, maybe your veg oil did its job and killed it quickly.
    If you want to use something else than regular fuel its DPF off time.
    Current cars:
    2007 Passat b6 2.0 tdi BMR DSG
    2011 Golf MK6 1.6 tdi CAYC 5 speed
     
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  3. Re: Sherlock Holmes? DPF and EGR 
    #3
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    Thanks for your reply.
    Fairly certain it's not the veg oil.
    No issues with starting, EGR valve cleanish, after 223,000 miles I was expecting it to be really clogged but was pleastly surprised.

    The original DPF was replaced on 205,000 miles so lasted a lot longer than other DPF's on this forum.

    Therefore doubt it was veg oil.
    Also, I didn't have to change the fuel filter as frequently . Last one lasted about 30,000 miles
     
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  4. Re: Sherlock Holmes? DPF and EGR 
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    Was DPF replaced with OEM part or aftermarket unit ?
    At this point there is still no any good aftermarket DPF that wouldn't be problem.
    Current cars:
    2007 Passat b6 2.0 tdi BMR DSG
    2011 Golf MK6 1.6 tdi CAYC 5 speed
     
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  5. Re: Sherlock Holmes? DPF and EGR 
    #5
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    Forced a regen on it last night, went 60 miles but it wouldn't regen.

    Temp inside DPF only rose to about 380/400 Celcius

    Other temps weren't even close to 700 Celcius.

    Got home and had to top up oil as the light came on.
    Maybe turbo seal is leaking.

    Took off inlet manifold, very dirty, but noticed that oil was crossing over the gasket into the air inlet so maybe that caused it to lose oil. Has been for about a year now. Thought it was tandum pump so had changed that.

    Will take off turbo tomorrow. Never done one before. Maybe it needs a new cassette?

    …....or maybe I need a new car!
     
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  6. Re: Sherlock Holmes? DPF and EGR 
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    Probably DPF got clogged because car is burning so much oil.
    Or its simply aftermarket crap.
    I know what I would do with DPF in your place
    I in process and a bit extra money would have some fun and go for 200 hp
    Current cars:
    2007 Passat b6 2.0 tdi BMR DSG
    2011 Golf MK6 1.6 tdi CAYC 5 speed
     
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