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Thread: Polo 6R 1.6 TDI - crank but no fire - P006C

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    Verified VCDS User iichel's Avatar
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    Polo 6R 1.6 TDI - crank but no fire - P006C

    So there is my distaster-Polo.
    It had a fuel leak at one of the injectors, the return line was damaged. Poor idle, but no MIL.
    Repaired the return line with new O-ring and clip.

    Now the engine will not start. Starter goes round, engine goes round but will not jump to life.
    New battery was fitted since old battery could not sustain 10 seconds of cranking at full charge.

    P006C
    - Checked for fuel leaks at the common rail, injectors and return line.
    - Ran the fuel pump in the fuel tank via Output Tests and verified fuel to come out of the return line (as suggested by: https://forums.ross-tech.com/showthr...-fuel-pressure)

    Please advise on next steps since I'm a bit lost.

    Code:
    Saturday,06,June,2020,04:44:31:11868
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64(VMWare)
    VCDS Version 20.4.1.0 (x64)  HEX-V2 CB: 0.4508.4
    Data version: 20200331 DS317.0
    www.Ross-Tech.com
    
    
    VIN: WVWZZZ6RZBY2274xx   License Plate: 
    Mileage: 132480km  Repair Order: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Chassis Type: 6R-VW25 (6N0)
    Scan: 01 02 03 04 08 09 10 15 17 19 25 37 44 55 56 77
    
    VIN: WVWZZZ6RZBY2274xx   Mileage: 132480km
    
    01-Engine -- Status: Malfunction 0010
    02-Auto Trans -- Status: OK 0000
    03-ABS Brakes -- Status: OK 0000
    04-Steering Angle -- Status: OK 0000
    08-Auto HVAC -- Status: OK 0000
    09-Cent. Elect. -- Status: OK 0000
    10-Park/Steer Assist -- Status: OK 0000
    15-Airbags -- Status: OK 0000
    17-Instruments -- Status: OK 0000
    19-CAN Gateway -- Status: OK 0000
    25-Immobilizer -- Status: OK 0000
    37-Navigation -- Status: Malfunction 0010
    44-Steering Assist -- Status: OK 0000
    55-Headlight Range -- Status: OK 0000
    56-Radio -- Status: Malfunction 0010
    77-Telephone -- Status: OK 0000
    -------------------------------------------------------------------------------
    Address 01: Engine (J623-CAYB)       Labels:. 03L-906-023-CAY.clb
       Part No SW: 03L 906 023 MG    HW: 03L 907 425 B
       Component: R4 1.6l TDI   H33 9978  
       Revision: --H33---    Serial number:               
       Coding: 00254016002400080000
       Shop #: WSC 00788 648 00255
       ASAM Dataset: EV_ECM16TDI02103L906023MG 003012
       ROD: EV_ECM16TDI02103L906023LK_SK25.rod
       VCID: 77AB169D3F4FA173621-8023
    
    1 Fault Found:
    10119 - High Pressure Fuel Rail 
              P00C6 00 [036] - Minimum Pressure Not Reached
              Intermittent - Not Confirmed - Tested Since Memory Clear
                 Freeze Frame:
                        Fault Status: 00000001
                        Fault Priority: 2
                        Fault Frequency: 1
                        Mileage: 132481 km
                        Date: 2020.06.06
                        Time: 20:46:04
    
                        Engine speed: 247.00 /min
                        Normed load value: 14.1 %
                        Vehicle speed: 0 km/h
                        Coolant temperature: 12 ∞C
                        Intake air temperature: 16 ∞C
                        Ambient air pressure: 990 mbar
                        Voltage terminal 30: 10.165 V
                        Unlearning counter according OBD: 40
                        Fuel high pressure: actual value-FUP_FIL: 8.966 MPa
                        Fuel pressure regulator valve: specified value rail pressure-LV_PCV_CTL: 00000001 
                        Fuel level-FTL_CAN: 20 l
                        Time since engine start: 0 s
                        Fuel Metering Valve-VCV: 25.452 %
                        Fuel Pressure Regulator Valve-PCV: 47.203 %
                        Fuel high pressure commanded value_1-FUP_SP_KPA_ENVD: 30212.402 kPa
    
    Readiness: 0 0 0 0 1 
    
    -------------------------------------------------------------------------------
    Address 02: Auto Trans        Labels: 0AM-927-769.clb
       Part No SW: 0AM 300 050 P    HW: 0AM 927 769 D
       Component: GSG DSG AG7     403 2321  
       Revision: 00040034    Serial number: TFK01101211158
       Coding: 0000020
       Shop #: WSC 01324 785 00200
       VCID: 3635DB997455987BB97-513D
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes
    Cannot be reached
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC (J255)       Labels: 6R0-907-044.clb
       Part No SW: 6R0 907 044 E    HW: 6R0 907 044 E
       Component: Climatronic   H09 0609  
       Revision: V0000000    
       VCID: 3537DC9565439363B0D-8061
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect. (J519)       Labels:. 7H0-937-08x-09.clb
       Part No SW: 7H0 937 089 D    HW: 7H0 937 089 
       Component: BCM T5GP Li4  H47 0230  
       Revision: BS047001    Serial number: 0398 025110284
       Coding: 3CB02BBF68A1000001380EB17CEB9FD15A80670F60053041200000000000
       Shop #: WSC 00788 648 00255
       VCID: 372BD69D7F4F6173A21-8063
    
       Subsystem 1 - Part No: 1K0 955 559 AH  Labels: 1K0-955-559-AG.CLB
       Component: RLS 240111 05  54  0403 
       Coding: 03302D
    
       Subsystem 2 - Part No SW: 6R0 959 801 AB    HW: 6R0 959 801 AB  Labels: 6R0-959-801.CLB
       Component: J386__TSG_FT  007 1611 
       Serial number: KU0-KU021.01.1116042
       Coding: 18BC30
    
       Subsystem 3 - Part No SW: 6R0 959 802 AD    HW: 6R0 959 802 AD  Labels: 6R0-959-802.CLB
       Component: J387__TSG_BT  007 1611 
       Serial number: KU0-KU028.01.1110654
       Coding: 08BC30
    
       Subsystem 4 - Part No SW: 5K0 959 542 A    HW: 5K0 959 542 A
       Component: E221__MFL-TAS  H07 0013 
       Serial number: 0201616             
       Coding: 020000
    
       Subsystem 5 - Part No SW: 6R0 959 811 G    HW: 6R0 959 811 G
       Component: J388__TSG_HL  007 1611 
       Serial number: KU0-KU012.01.1115045
       Coding: 08BC32
    
       Subsystem 6 - Part No SW: 6R0 959 812 G    HW: 6R0 959 812 G
       Component: J389__TSG_HR  007 1611 
       Serial number: KU0-KU019.01.1112796
       Coding: 08BC32
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 10: Park/Steer Assist (J446)       Labels:| 6R0-919-475.clb
       Part No SW: 6R0 919 475 B    HW: 7E0 919 475 
       Component: PARKHILFE 4K  H10 0012  
       Revision: --------    Serial number: 12801102200011
       Coding: 108101
       Shop #: WSC 00788 648 00255
       ASAM Dataset: EV_VW250ParkiAssis2 S01008
       ROD: EV_VW250ParkiAssis2.rod
       VCID: 3D27C4B55DF34B2378D-8069
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
       Part No SW: 6R0 959 655 K    HW: 6R0 959 655 K
       Component: VW10Airbag01M H09 0020  
       Revision: --------    Serial number: 003GX00ETS2$
       Coding: 00314D
       Shop #: WSC 00788 648 00255
       ASAM Dataset: EV_AirbaVW10BPAVW250 A01001
       ROD: EV_AirbaVW10BPAVW250.rod
       VCID: 4ACD9F691C3DEC9BCDF-801F
    
       Crash sensor for side airbag: driver side: 
       Serial number: 3575HRB404V0ATOC80M4
    
       Crash sensor for side airbag: front passenger side: 
       Serial number: 3585HRB404R0ATOCFGVX
    
       Crash sensor for side airbag: rear: driver side: 
       Serial number: 3515RRB4055058P0D0DS
    
       Crash sensor for side airbag: rear: passenger side: 
       Serial number: 3525RRB404T0BEE6MOG9
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
       Part No SW: 6R0 920 861 F    HW: 6R0 920 861 F
       Component: KOMBI         H05 0304  
       Serial number: 00000000000000
       Coding: 140E00
       Shop #: WSC 12345 123 45678
       ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04086
       ROD: EV_Kombi_UDS_VDD_RM09_004_VW25.rod
       VCID: 3829D5A172D16E0BABB-806D
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway (J533)       Labels:. 6N0-909-901-6R.clb
       Part No SW: 6N0 909 901     HW: 7H0 937 089 
       Component: GW-K-CAN TP20 0230  
       Coding: 002200
       Shop #: WSC 00788 648 00255
       VCID: 70B92D815AA1F64BA3B-8025
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
       Part No SW: 5K0 953 234     HW: 5K0 953 234 
       Component: IMMO          H05 0304  
       Serial number:               
       Coding: 000000
       Shop #: WSC 00000 000 00000
       ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03008
       ROD: EV_Immo_UDS_VDD_RM09_VW21.rod
       VCID: 6A8D3FE97CFD0C9BEDF-803F
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 37: Navigation (J0506)       Labels:. 1T0-035-680.clb
       Part No SW: 1T0 035 680 F    HW: 1T0 035 680 F
       Component: RNS-MID       H61 3970  
       Revision: AB001001    Serial number: VWZ6Z7R5312684
       Coding: 00000400000000200001
       Shop #: WSC 05314 123 12345
       VCID: 313FE885912BBF43EC5-8065
    
    1 Fault Found:
    00446 - Function Limitation due to Under-Voltage 
                002 - Lower Limit Exceeded - Intermittent
                 Freeze Frame:
                        Fault Status: 00100010
                        Fault Priority: 5
                        Fault Frequency: 1
                        Reset counter: 223
                        Mileage: 132481 km
                        Time Indication: 0
                        Date: 2014.10.28
                        Time: 20:46:08
    
    
    -------------------------------------------------------------------------------
    Address 44: Steering Assist        Labels: 6Q0-423-156.clb
       Part No: 6R0 423 156 B
       Component: LenkhilfeTRW        V277  
       Coding: 11220
       Shop #: WSC 12345  
       VCID: 2F3BEEFD8E5FA9B3FA1-807B
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 55: Headlight Range (J431)       Labels:. 6R0-907-357.clb
       Part No SW: 6R0 907 357     HW: 6R0 907 357 
       Component: LWR-ECU       H02 0070  
       Revision: --------    Serial number: --------------
       Coding: 0112000001000000
       Shop #: WSC 00788 648 00255
       ASAM Dataset: EV_HeadlRegulVWLWRPt 001004
       ROD: EV_HeadlRegulVWLWRPt_VW25.rod
       VCID: 77AB169D3F4FA173621-8023
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 56: Radio (J0506)       Labels:. 1T0-035-680.clb
       Part No SW: 1T0 035 680 F    HW: 1T0 035 680 F
       Component: RNS-MID       H61 3970  
       Revision: AB001001    Serial number: VWZ6Z7R5312684
       Coding: 00000400000000200001
       Shop #: WSC 05314 123 12345
       VCID: 313FE885912BBF43EC5-8065
    
    1 Fault Found:
    00446 - Function Limitation due to Under-Voltage 
                002 - Lower Limit Exceeded - Intermittent
                 Freeze Frame:
                        Fault Status: 00100010
                        Fault Priority: 5
                        Fault Frequency: 1
                        Reset counter: 223
                        Mileage: 132481 km
                        Time Indication: 0
                        Date: 2014.10.28
                        Time: 20:46:08
    
    
    -------------------------------------------------------------------------------
    Address 77: Telephone (J412)       Labels:| 7P6-035-730.clb
       Part No SW: 7E0 035 730 A    HW: 7E0 035 730 A
       Component: TELEFON       H05 0550  
       Revision: 1B001001    Serial number: 00007669233345
       Coding: 0800000000000210
       Shop #: WSC 00788 648 00255
       ASAM Dataset: UHVNA A01009
       ROD: UHVNA.rod
       VCID: 1F1B1E3DF73F39334A1-804B
    
    No fault code found.
    
    End----------(Elapsed Time: 02:06, VBatt start/end: 12.4V/12.4V)-----------

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  3. #2
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    Had a similar fault on a polo 1.6 TDI. Cranked but no start. Only fault generated was low rail pressure. Eventually found a node in the main loom near bulkhead which split live feeds to ecu, rail pressure solenoid and solenoid on high pressure pump. Check the feed at these solenoid so with a bulb during cranking. On the polo I had it dimmed considerably when cranking. Found the node, cut it out and rejoined wires. Car started instantly

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  5. #3
    Verified VCDS User iichel's Avatar
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    Andy, thank your your tip.
    I checked the voltage to the HPFP solenoid and it dimmed to about 10V during crank. I guess that's acceptable.

    Here are some measurementvalues during cranking. Not sure whether it's useful but perhaps good to see.
    https://drive.google.com/file/d/1sm4...ew?usp=sharing

  6. #4
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    Hi iichel,
    I would start with a "leak off " test on the injectors, to see if a faulty injector is causing the low pressure. Have you got a high pressure gauge to test the HP pump manually? Have a look at the IMV/ SCV and see if it is functioning and clear from any minute debris.
    Regards HMC

  7. #5
    Verified VCDS User iichel's Avatar
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    Hi HMC, thank you for your reply. Is a leak off test something that can be done by myself as a hobbyist or is this something for a specialist?

  8. #6
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    Hi iichel,
    A kit like https://www.amazon.co.uk/Sealey-VS20.../dp/B0016Y7R6Y makes life easy. Connect the bottles to the injector crank it and look for a bottle filling up.
    Regards HMC

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  10. #7
    Verified VCDS User iichel's Avatar
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    Thanks. What should I look out for?
    Healthy injector - little fuel in the fuel return line
    Faulty injector - no fuel in the return line or a lot of fuel in the return line?

  11. #8
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    A good injector would have relatively little fuel, perhaps just filling the connector pipe on a 20 second crank, a bad injector will start to fill the bottle, it is obvious when you do it. Remember to seal the car's leak off pipes to stop fuel spillage and air ingress.
    HMC

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  13. #9
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    Hi,

    I've looked at your live data, and there is a vast variance, between your actual fuel pressure and specified. At its highest point, your actual is 9.943 MPa (99 bars) and your specified is 30 358.887 (303 bars). These engines need about 250 bars to idle, in this case your engine is simply not building enough fuel pressure. Kindly start the engine by introducing another source of fuel (brake cleaner or similar) and see whether it continues to run on its own. Please watch the live data, fuel pressure actual and desired while doing this procedure, this will tell you whether with an external fuel source, your HPP is able to build enough fuel pressure.

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  15. #10
    Verified VCDS User iichel's Avatar
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    4 new injectors and she's good to go. all four old injectors were worn out.

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