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

   #1  

iichel

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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/showthread.php?11556-2012-golf-lower-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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   #2  

Andymod

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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
 
   #3  

iichel

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Last edited:
   #4  

HMC

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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
 
   #5  

iichel

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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?
 
   #7  

iichel

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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?
 
   #8  

HMC

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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
 
   #9  

Shade

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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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