T6 Transporter. Intermittent glow plugs fault

   #1  

invernesspl

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C?ID=345478
I've got a 2016 T6 Startline.

It's been driving fine and then suddenly the engine management light decides to come on. After a scan it says glow plugs on all cylinders have intermittent electrical fault.

It did this a few weeks ago after the van had been left with a completely dead battery, but after new battery fitted the faults cleared and have been fine until now.

Here is the codes, any suggestions where to start with this one?
Thanks.

(ignore the ABS Fault, i've got a new TPMS reset switch on order)

Code:
Wednesday,02,September,2020,12:18:46:41168
VCDS Version: Release 20.4.2 (x64) Running on Windows 8.1 x64
www.Ross-Tech.com

                Address 01: Engine       Labels: 04L-907-309-V2.clb
Control Module Part Number: 04L 906 056 KA    HW: 04L 907 445 
  Component and/or Version: R4 2.0l TDI   H02 4047
           Software Coding: 00114014430401090000
            Work Shop Code: WSC 00000 790 50316
              ASAM Dataset: EV_ECM20TDI03004L906056KA 004003 (VN75)
                       ROD: EV_ECM20TDI03004L906056JS_004.rod
                      VCID: 76B5E5B0084D30BB78F-8022
4 Faults Found:

15916 - Cylinder 1 Glow Plug Circuit (Q10) 
          P0671 00 [236] - Electrical Fault
          MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 35315 km
                    Date: 2031.01.29
                    Time: 16:56:32

                    Engine speed: 927.75 /min
                    Normed load value: 35.3 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 18 °C
                    Intake air temperature: 18 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 11.742 V
                    Unlearning counter according OBD: 40
                    Preheat time: 2.5 s
                    Glow status: Post-heat
                    Extern.temp.sens.1 bank 1: raw value: 19.5 °C

15918 - Cylinder 2 Glow Plug Circuit (Q11) 
          P0672 00 [236] - Electrical Fault
          MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 35315 km
                    Date: 2031.01.29
                    Time: 16:56:32

                    Engine speed: 927.75 /min
                    Normed load value: 35.3 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 18 °C
                    Intake air temperature: 18 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 11.742 V
                    Unlearning counter according OBD: 40
                    Preheat time: 2.5 s
                    Glow status: Post-heat
                    Extern.temp.sens.1 bank 1: raw value: 19.5 °C

15920 - Cylinder 3 Glow Plug Circuit (Q12) 
          P0673 00 [236] - Electrical Fault
          MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 35315 km
                    Date: 2031.01.29
                    Time: 16:56:32

                    Engine speed: 927.75 /min
                    Normed load value: 35.3 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 18 °C
                    Intake air temperature: 18 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 11.742 V
                    Unlearning counter according OBD: 40
                    Preheat time: 2.5 s
                    Glow status: Post-heat
                    Extern.temp.sens.1 bank 1: raw value: 19.5 °C

15922 - Cylinder 4 Glow Plug Circuit (Q13) 
          P0674 00 [236] - Electrical Fault
          MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 35315 km
                    Date: 2031.01.29
                    Time: 16:56:32

                    Engine speed: 927.75 /min
                    Normed load value: 35.3 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 18 °C
                    Intake air temperature: 18 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 11.742 V
                    Unlearning counter according OBD: 40
                    Air mass at air mass meter 1: 43.2 kg/h
                    Standardised airflow ratio: 1.209 counts
                    Exhaust recirc.valve 1 bank 1: posit.feedback - Act.value: 29.00 %
                    Throttl.valve adapt. 1 bank 1: posit feedback - Act.value: 0.13 %
                    Charge air pressure specified value: 1.122 bar
                    Absolute intake pressure: 99 kPa abs
                    Mean injection quantity: 9 mg/stroke
                    Index of current engine mode: 0
                    Index of next requested engine mode: 0
                    Index of engine target mode: 0


Readiness: N/A

FULL SCAN

Code:
Wednesday,02,September,2020,12:20:06:41168
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 8.1 x64
VCDS Version: 20.4.2.0 (x64)  HEX-V2 CB: 0.4513.4
Data version: 20200730 DS317.0
www.Ross-Tech.com


VIN: WV1ZZZ7HZHH029878   License Plate: 


Chassis Type: 7H-VN75 (7E0)
Scan: 01 03 04 08 09 15 17 19 25 5F 61 0B

VIN: WV1ZZZ7HZHH029878   Mileage: 35320km-21946miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: Malfunction 0010
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
15-Airbags -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
5F-Information Electr. -- Status: OK 0000
61-Battery Regul. -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (2D2D2-CXGB)       Labels:. 04L-907-309-V2.clb
   Part No SW: 04L 906 056 KA    HW: 04L 907 445 
   Component: R4 2.0l TDI   H02 4047  
   Revision: 23002001    
   Coding: 00114014430401090000
   Shop #: WSC 00000 790 50316
   ASAM Dataset: EV_ECM20TDI03004L906056KA 004003
   ROD: EV_ECM20TDI03004L906056JS_004.rod
   VCID: 76B5E5B0084D30BB78F-8022

4 Faults Found:
15916 - Cylinder 1 Glow Plug Circuit (Q10) 
          P0671 00 [236] - Electrical Fault
          MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 35315 km
                    Date: 2031.01.29
                    Time: 16:56:32

                    Engine speed: 927.75 /min
                    Normed load value: 35.3 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 18 °C
                    Intake air temperature: 18 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 11.742 V
                    Unlearning counter according OBD: 40
                    Preheat time: 2.5 s
                    Glow status: Post-heat
                    Extern.temp.sens.1 bank 1: raw value: 19.5 °C

15918 - Cylinder 2 Glow Plug Circuit (Q11) 
          P0672 00 [236] - Electrical Fault
          MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 35315 km
                    Date: 2031.01.29
                    Time: 16:56:32

                    Engine speed: 927.75 /min
                    Normed load value: 35.3 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 18 °C
                    Intake air temperature: 18 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 11.742 V
                    Unlearning counter according OBD: 40
                    Preheat time: 2.5 s
                    Glow status: Post-heat
                    Extern.temp.sens.1 bank 1: raw value: 19.5 °C

15920 - Cylinder 3 Glow Plug Circuit (Q12) 
          P0673 00 [236] - Electrical Fault
          MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 35315 km
                    Date: 2031.01.29
                    Time: 16:56:32

                    Engine speed: 927.75 /min
                    Normed load value: 35.3 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 18 °C
                    Intake air temperature: 18 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 11.742 V
                    Unlearning counter according OBD: 40
                    Preheat time: 2.5 s
                    Glow status: Post-heat
                    Extern.temp.sens.1 bank 1: raw value: 19.5 °C

15922 - Cylinder 4 Glow Plug Circuit (Q13) 
          P0674 00 [236] - Electrical Fault
          MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 35315 km
                    Date: 2031.01.29
                    Time: 16:56:32

                    Engine speed: 927.75 /min
                    Normed load value: 35.3 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 18 °C
                    Intake air temperature: 18 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 11.742 V
                    Unlearning counter according OBD: 40
                    Air mass at air mass meter 1: 43.2 kg/h
                    Standardised airflow ratio: 1.209 counts
                    Exhaust recirc.valve 1 bank 1: posit.feedback - Act.value: 29.00 %
                    Throttl.valve adapt. 1 bank 1: posit feedback - Act.value: 0.13 %
                    Charge air pressure specified value: 1.122 bar
                    Absolute intake pressure: 99 kPa abs
                    Mean injection quantity: 9 mg/stroke
                    Index of current engine mode: 0
                    Index of next requested engine mode: 0
                    Index of engine target mode: 0

Readiness: N/A

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels: 7E0-907-37x-MK100ESC.clb
   Part No SW: 7E0 907 379 P    HW: 7E0 907 379 M
   Component: ESC           H06 0133  
   Revision: 00000000    Serial number: 42126000000287
   Coding: 307E4098256484870C7D027DA48A21F3790000
   Shop #: WSC 02739 790 50316
   ASAM Dataset: EV_Brake1ESCCONTIVN75XGP2 011001
   ROD: EV_Brake1ESCCONTIVN75XGP2_011.rod
   VCID: 3FDB409467F7B1F36B9-806A

1 Fault Found:
0397 - TPMS Warning 
          C102D F0 [137] - Pressure Loss
          MIL ON - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 49
                    Mileage: 35315 km
                    Date: 2020.08.29
                    Time: 13:54:59


-------------------------------------------------------------------------------
Address 04: Steering Angle (G085)       Labels:* 6R0-959-654.clb
   Part No SW: 6R0 959 654     HW: 6R0 959 654 
   Component: LENKW.SENSOR  H07 0070  
   Serial number: 02071613470298
   Coding: 01
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_LWSKLOVW25X 005001
   ROD: EV_LWSKLOVW25X.rod
   VCID: 7EA5FD90207D78FB20F-802A

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J301)       Labels:| 7E5-907-047.clb
   Part No SW: 7E0 907 047 AK    HW: 7E0 907 047 AK
   Component: Climatic-T5   H22 0708  
   Revision: 00001002    
   Coding: 0000000003
   Shop #: WSC 02737 790 50316
   ASAM Dataset: EV_ClimaticT5 A01003
   ROD: EV_ClimaT5Basis.rod
   VCID: 73B3DCA41B3F25935F1-8026

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 7E0-937-BCM-V1.clb
   Part No SW: 7E0 937 090 B    HW: 7E0 937 090 
   Component: BCM PQ25 Max4 H81 0744  
   Revision: B9081001    Serial number: 0982 200160355
   Coding: E0A4303A0A212031002009742C2B8C540F00708F60464D60320400220800
   Shop #: WSC 02737 534 188775
   VCID: 2A0D01C08CF5245B2C7-807E

   Subsystem 1 - Part No SW: 7E0 959 801 P    HW: 7E0 959 801 P
   Component: J386__TSG_FT  003 0653 
   Serial number: KU0KU019071662016989
   Coding: 1400B0

   Subsystem 2 - Part No SW: 7E0 959 802 P    HW: 7E0 959 802 P
   Component: J387__TSG_BT  003 0653 
   Serial number: KU0KU020071662028142
   Coding: 0400A0

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 7E0 959 655 G    HW: 7E0 959 655 G
   Component: VW10Airbag021 H08 0018  
   Revision: --------    Serial number: 003V3001GEM4
   Coding: 000000000000000000000000000000003231
   Shop #: WSC 02734 790 50316
   ASAM Dataset: EV_AirbaVW10BPAVW12X 001028
   ROD: EV_AirbaVW10BPAVN750.rod
   VCID: 3A2D31807CD594DB5C7-806E

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
   Part No SW: 7E0 920 960 S    HW: 7E0 920 960 S
   Component: KOMBI         H03 1104  
   Serial number: 00000000000000
   Coding: 450B010300
   Shop #: WSC 02737 790 50316
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A05733
   ROD: EV_Kombi_UDS_VDD_RM09_005_VW31.rod
   VCID: 392F2E8C79D39FC355D-806C

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 7E0-909-901.clb
   Part No SW: 7E0 909 901     HW: 7E0 937 090 
   Component: GW-K-CAN TP20 H81 0744  
   Revision: B9081001    
   Coding: 042305
   Shop #: WSC 02737 534 188775
   VCID: 6889BBC85279D64BFA3-803C

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          H03 1104  
   Serial number:               
   Coding: 000000
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03710
   ROD: EV_Immo_UDS_VDD_RM09_VW31.rod
   VCID: 6A8DC1C04CF5E45BEC7-803E

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:| 5G0-035-MIB-ENT2.clb
   Part No SW: 1K8 035 150 L    HW: 1K8 035 150 L
   Component: MU-E-D-ER     055 7067  
   Serial number: 07061600011928
   Coding: 065700003C00000041111101008000001F0000C60000010001
   Shop #: WSC 02737 790 50316
   ASAM Dataset: EV_MUEnt4CGen2LGE 001032
   ROD: EV_MUEnt4CGen2LGE_VW32.rod
   VCID: 2E050DD0B09D487BF0F-807A

No fault code found.

-------------------------------------------------------------------------------
Address 61: Battery Regul. (J840)       Labels:. 1K0-907-534.clb
   Part No SW: 7E0 907 534     HW: 7E0 937 090 
   Component: Batt.regelung H81 0744  
   Serial number: 0982 200160355
   Coding: 030B1A73
   Shop #: WSC 02739 790 00000
   VCID: 6889BBC85279D64BFA3-803C

   Subsystem 1 - Part No SW: 7E0 915 181 K    HW: 7E0 915 181 K
   Component: J367-BDMConti  H03 1050 
   Serial number: 75410903001607160349

No fault code found.

End----(Elapsed Time: 01:04, VBatt start/end: 12.1V/12.1V. VIgn 11.9V)-----
 
   #2  

Uwe

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Got wiring diagrams for this vehicle? Look for something that all four glow plugs have in common. A ground? A power source? A glow plug control module?

-Uwe-
 
   #3  

Jack@European_Parts

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Is the module for glow plugs relay faulty or main fuse corroded from running HOT & as Uwe aforementioned how are grounds at head, consider overlay to head area for ground yet too?
 
   #4  

invernesspl

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Is the module for glow plugs relay faulty or main fuse corroded from running HOT & as Uwe aforementioned how are grounds at head, consider overlay to head area for ground yet too?

I have removed the glow plug module/relay and checked that the connections are all clean. It all appears to be good, as do the fuses. I will try and find a wiring diagram and check common points as UWE suggested. It's only done 20k miles so would be surprised if it isn't something simple.
 
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