Help with Electrical fault

**Dieseljuice** · 14-07-2022,12:28 PM

Update: Radio not used and left off since January. DTC's not cleared since January.

Faults April 2022

Sunday,03,April,2022,13:30:42:58947
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 11 x64
VCDS Version: 22.3.0.1 (x64)
Data version: 20220225 DS336.1
Ross-Tech: Home

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Chassis Type: 1K-VW36 (7N0)
Scan: 01 03 08 09 10 15 16 17 19 25 2E 42 44 46 52 56 62 72 77

01-Engine -- 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
16-Steering wheel -- Status: Malfunction 0010
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
2E-Media Player 3 -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
56-Radio -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
77-Telephone -- Status: OK 0000

-------------------------------------------------------------------------------
Address 01: Engine (J623-CFFB) Labels:. 03L-906-018-CFF.clb
Part No SW: 03L 906 018 HW: 03L 907 309 R
Component: R4 2,0L EDC H23 7453
Revision: 42H23--- Serial number: 00000000000000 CVN: 3492FAA1
Coding: 00190012042500080000
Shop #: WSC 01357 011 00200
ASAM Dataset: EV_ECM20TDI01103L906018 003010
ROD: EV_ECM20TDI01103L906018_003_VW36.rod
VCID: 67DA21709E8B97B763-8032
VINID: 9E69EAAAA05BA929C22090050058D56F0A

1 Fault Found:
4124 - Sensor Reference Voltage B
P0651 00 [032] - Open Circuit
Intermittent - Not Confirmed - Tested Since Memory Clear

Readiness: 0 0 0 0 0

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Address 16: Steering wheel (J527) Labels:| 5K0-953-569.clb
Part No SW: 5K0 953 507 BC HW: 5K0 953 549 E
Component: Lenks.Modul 008 0080
Revision: -------- Serial number: 90422KCP000S4
Coding: 1082140000
Shop #: WSC 01357 011 00200
ASAM Dataset: EV_SMLSNGKUDS A05001
ROD: EV_SMLSNGKUDS_A05.rod
VCID: 72EC4024A549621FC4-8026

Multifunction steering wheel control module:
Subsystem 1 - Part No SW: 3C8 959 537 D HW: 3C8 959 537 D Labels: 3C8-959-537.CLB
Component: E221__MFL-TK6 H06 0022
Serial number: 40000000000000304063
Coding: E20000

3 Faults Found:
147462 - Terminal 15
B1148 12 [009] - Short to Plus
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 19
Reset counter: 77
Mileage: 98008 km
Date: 2022.02.02
Time: 16:03:31

226057 - Ignition Starter Switch; Terminal S
B1147 F1 [008] - Open or Short to GND
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 3
Reset counter: 112
Mileage: 99606 km
Date: 2022.03.18
Time: 12:26:02

365080 - Controls in Steering Wheel
U108E 00 [008] - No Communications
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 3
Reset counter: 114
Mileage: 99368 km
Date: 2022.03.12
Time: 10:39:17

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Address 17: Instruments (J285) Labels:| 5K0-920-xxx-17.clb-SRI1
Part No SW: 5K0 920 971 AX HW: 5K0 920 971 AX
Component: KOMBI H20 0420
Serial number: 00000000000000
Coding: 470B01
Shop #: WSC 00774 210 00000
ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04089
ROD: EV_Kombi_UDS_VDD_RM09_004_VW36.rod
VCID: 05060BF884C765A7F1-8050

No fault code found.

-------------------------

**Dieseljuice** · 14-07-2022,12:30 PM

NO faults since April and car runs as normal. Faults start again in June with flashing coil on dash.

Since January I do not clear DTC's....only scan to read them.

June 2022.....Flashing coil on dash.....note - this can happen before I start the car.
DTC's not cleared last time....so same faults shown....nothing new.
Radio still turned off since January

I turn ignition off pull out key, reinsert and start and no issues.

Car ran as normal untill 13 days later then flashing coil and scan shows same fault.

Monday,06,June,2022,11:51:31:58947
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 11 x64
VCDS Version: 22.3.1.4 (x64)
Data version: 20220407 DS337.0
Ross-Tech: Home

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

Chassis Type: 1K-VW36 (7N0)
Scan: 01 03 08 09 10 15 16 17 19 25 2E 42 44 46 52 56 62 72 77

01-Engine -- Status: Malfunction 0010
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
16-Steering wheel -- Status: Malfunction 0010
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
2E-Media Player 3 -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
56-Radio -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
77-Telephone -- Status: OK 0000

-------------------------------------------------------------------------------
Address 01: Engine (J623-CFFB) Labels:. 03L-906-018-CFF.clb
Part No SW: 03L 906 018 HW: 03L 907 309 R
Component: R4 2,0L EDC H23 7453
Revision: 42H23--- Serial number: 00000000000000 CVN: 3492FAA1
Coding: 00190012042500080000
Shop #: WSC 01357 011 00200
ASAM Dataset: EV_ECM20TDI01103L906018 003010
ROD: EV_ECM20TDI01103L906018_003_VW36.rod
VCID: 67DA21709E8B97B76E-8032
VINID: 9E69EAAAA05BA929C22090050058D56F0A

1 Fault Found:
4124 - Sensor Reference Voltage B
P0651 00 [032] - Open Circuit
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 3
Mileage: 101070 km
Date: 2000.00.00
Time: 00:00:00

Engine RPM: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: 35 °C
Intake air temperature: 17 °C
Ambient air pressure: 1010 mbar
Voltage terminal 30: 11.980 V
Unlearning counter according OBD: 38
Exhaust gas temperature sensor 1: 20.0 °C
Exhaust gas temperature sensor 2: -0.0 °C
Exhaust gas temperature sensor 3: 71.8 °C
Exhaust gas temperature sensor 4: 27.6 °C
Shut-off timer: last engine shut-off time: 4662 s

Readiness: 0 0 0 0 0

Address 16: Steering wheel (J527) Labels:| 5K0-953-569.clb
Part No SW: 5K0 953 507 BC HW: 5K0 953 549 E
Component: Lenks.Modul 008 0080
Revision: -------- Serial number: 90422KCP000S4
Coding: 1082140000
Shop #: WSC 01357 011 00200
ASAM Dataset: EV_SMLSNGKUDS A05001
ROD: EV_SMLSNGKUDS_A05.rod
VCID: 72EC4024A549621FC9-8026

Multifunction steering wheel control module:
Subsystem 1 - Part No SW: 3C8 959 537 D HW: 3C8 959 537 D Labels: 3C8-959-537.CLB
Component: E221__MFL-TK6 H06 0022
Serial number: 40000000000000304063
Coding: E20000

3 Faults Found:
147462 - Terminal 15
B1148 12 [008] - Short to Plus
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 107
Reset counter: 153
Mileage: 98008 km
Date: 2022.02.02
Time: 16:03:31

226057 - Ignition Starter Switch; Terminal S
B1147 F1 [008] - Open or Short to GND
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 15
Reset counter: 149
Mileage: 99606 km
Date: 2022.03.18
Time: 12:26:02

365080 - Controls in Steering Wheel
U108E 00 [008] - No Communications
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 4
Reset counter: 153
Mileage: 99368 km
Date: 2022.03.12
Time: 10:39:17

**Dieseljuice** · 14-07-2022,12:32 PM

Car taken to Audi Indy specialist...as car has never had emissions software upgrade and I do not wish to risk local VW upgrading software.

29th June...something new....2 more Engine fault codes, speed sensor and Cyl 3 misfire.

I cannot recall if I was driving or not but now I sometimes get engine fault symbol on dash as well as flashing coil....sometimes coil only sometime eng only and sometimes before I start car and car goes into limp mode.

Had this a few times so booked car into a good VAG indy specialist who has official software.

Indy explained 4 sensors on the 5V circuit with the fault. Tested each sensor and all working ok and wiring seems fine though known wiring issues with earlier build version and not my build version. Told Eng speed sensor can fail but rare and he did not think it so in this case, other 2 sensors (not told what) in his experience have never failed. The 4th is the EGR and he was surprised at 11 years old and 60k+ miles it had never been replaced. He could not be certain but suspected EGR. All DTCs reset and suggested I try it for a few weeks. Told to bring it back if it goes into limp mode and not to turn engine off.

Next day come to start car and same faults as below are back.
Sometimes pull key and restart and fault gone.....but drive a short distance and coil and or eng light come on and sometimes limp mode.
On one occasion engine running, limp mode with same faults as below except no cyl 3 misfire reported, I reset DTC's and immediate rescan only showed Engine Speed Sensor fault...nothing else. So clearing DTC's did not clear all faults.
Tried quite a few scans and resets of DTC's over last week or so as almost every day now car goes into limp mode either on start up or soon afterwards. What I have noticed is car revs at 950 when start with a fault....clear DTC's (engine running) and revs drop to 750.

I can always start the car without too much trouble, not first fire as when car was ok, but immediately after that. On turn off engine does not immedaitely stop as when it was ok, but immediately after that.

So if it was speed sensor would the car idle fine (even if at 950 rpm) and drive ok when no fault and still run smoothly but no power in limp mode?

I see no EGR faults with Vagcom......but is the 950rpm idle when coil or eng light is on indicating its the EGR?

Finally, more recently scanning and clearimg DTC's afterwards, the faults usually show random 1, 2 or 3 of 3 or sometimes no Steering Wheel faults......so I'm guessing this is not the fault.
Always reports Engine Sensor Ref Voltage B and mostly Speed sensor, either speed sensor and misfire, or no speed sensor and just misfire (once so far) ...so I'm guessing cyl 3 misfire is not the issue.

Where I'm at now is thinking of pulling battery and take off ECU connector and spray contact cleaner on pins and plug and reassemble.

Any help or comments appreciated.

Wednesday,29,June,2022,11:35:21:58947
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 11 x64
VCDS Version: 22.3.1.4 (x64)
Data version: 20220407 DS337.0
Ross-Tech: Home

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

Chassis Type: 1K-VW36 (7N0)
Scan: 01 03 08 09 10 15 16 17 19 25 2E 42 44 46 52 56 62 72 77

01-Engine -- Status: Malfunction 0010
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
16-Steering wheel -- Status: Malfunction 0010
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
2E-Media Player 3 -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
56-Radio -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
77-Telephone -- Status: OK 0000

-------------------------------------------------------------------------------
Address 01: Engine (J623-CFFB) Labels:. 03L-906-018-CFF.clb
Part No SW: 03L 906 018 HW: 03L 907 309 R
Component: R4 2,0L EDC H23 7453
Revision: 42H23--- Serial number: 00000000000000 CVN: 3492FAA1
Coding: 00190012042500080000
Shop #: WSC 01357 011 00200
ASAM Dataset: EV_ECM20TDI01103L906018 003010
ROD: EV_ECM20TDI01103L906018_003_VW36.rod
VCID: 67DA21709E8B97B76E-8032
VINID: 9E69EAAAA05BA929C22090050058D56F0A

3 Faults Found:
4124 - Sensor Reference Voltage B
P0651 00 [175] - Open Circuit
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 10
Mileage: 101485 km
Date: 2000.00.00
Time: 00:00:00

Engine RPM: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: 12 °C
Intake air temperature: 13 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 10.820 V
Unlearning counter according OBD: 40
Exhaust gas temperature sensor 1: 20.0 °C
Exhaust gas temperature sensor 2: -0.0 °C
Exhaust gas temperature sensor 3: 71.8 °C
Exhaust gas temperature sensor 4: 27.6 °C
Shut-off timer: last engine shut-off time: 4662 s

4087 - Engine Speed Sensor (G28)
P0322 00 [096] - No Signal
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 2
Mileage: 101596 km
Date: 2022.06.24
Time: 17:46:59

Engine RPM: 861.00 /min
Normed load value: 23.9 %
Vehicle speed: 35 km/h
Coolant temperature: 85 °C
Intake air temperature: 24 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 13.900 V
Unlearning counter according OBD: 40
Engine start: start synchronization: EPM_MODE_BACKUP_CRS
Engine start: start synchronization-Test_Program_Epm st Op Mode State t UBYTE: 60

8737 - Cylinder 3
P0303 00 [096] - Misfire Detected
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 101580 km
Date: 2022.06.24
Time: 13:40:11

Engine RPM: 934.50 /min
Normed load value: 25.1 %
Vehicle speed: 0 km/h
Coolant temperature: 87 °C
Intake air temperature: 38 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 13.720 V
Unlearning counter according OBD: 40
Mean injection quantity: 5.65 mg/stroke
Air mass: actual value (mg/stroke): 487.4 mg/stroke
Fuel temperature: 47.0 °C
Oxygen sensor 1 bank 1: lambda actual value: 6.802
Pressure control valve adaptation factor: 1.0752
Injection release status-Bits 0-7: 56

Readiness: 0 1 0 0 0

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527) Labels:| 5K0-953-569.clb
Part No SW: 5K0 953 507 BC HW: 5K0 953 549 E
Component: Lenks.Modul 008 0080
Revision: -------- Serial number: 90422KCP000S4
Coding: 1082140000
Shop #: WSC 01357 011 00200
ASAM Dataset: EV_SMLSNGKUDS A05001
ROD: EV_SMLSNGKUDS_A05.rod
VCID: 72EC4024A549621FC9-8026

Multifunction steering wheel control module:
Subsystem 1 - Part No SW: 3C8 959 537 D HW: 3C8 959 537 D Labels: 3C8-959-537.CLB
Component: E221__MFL-TK6 H06 0022
Serial number: 40000000000000304063
Coding: E20000

3 Faults Found:
147462 - Terminal 15
B1148 12 [008] - Short to Plus
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 136
Reset counter: 167
Mileage: 98008 km
Date: 2022.02.02
Time: 16:03:31

226057 - Ignition Starter Switch; Terminal S
B1147 F1 [008] - Open or Short to GND
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 18
Reset counter: 163
Mileage: 99606 km
Date: 2022.03.18
Time: 12:26:02

365080 - Controls in Steering Wheel
U108E 00 [008] - No Communications
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 4
Reset counter: 153
Mileage: 99368 km
Date: 2022.03.12
Time: 10:39:17

**Crasher** · 14-07-2022,01:17 PM

If I was doing the job I would be recommending a new ECU

**Dieseljuice** · 14-07-2022,03:30 PM

Thanks Crasher.
As you pointed out last time regarding ECU. It sort of makes the most sense to me too.
Is it worth (and can it be done...by who?....any recommendations) considering a repair?
Is it worth considering second hand unit?...will it need programming? (I assume the unit needs to be identical model number etc)
If new....does it need programing...or DIY remove battery, remove ECU, install new ECU then battery and go?
If it needs programming...is this dealer only? (and I do not want emissions upgrade).

Is it worth just part ex-ing (I'd declare the fault) for another golf....what could I expect dealer to knock off the car value?

Bummer!....I love the car too...its been cherished....even indy commented on its condition.

Thanks again for any advice.

Kind Regards

**VAG-Abound** · 14-07-2022,03:38 PM

It wasn't clear whether you had ruled out a physical problem with the 5V wire that might be giving intermittent problems.

Re the ECU, if the flash is good then most decent professional / amateur tuners should be able to do a straight clone of the original. That should fix it if it was a bad (other) chip, connection, etc in the ECU.

EDIT: Was thinking it was a Golf 5, but then re-read it is a 6. May be a bit harder but there are still places that do the equivalent ECU clone work.

**Crasher** · 14-07-2022,04:01 PM

We have given up on ECU repair people, they are all useless. I have diagnosed a fair few of these being faulty but only a coupe had it done, most sell the car.

**Dieseljuice** · 14-07-2022,04:03 PM

Thanks VAG-Abound.
Indy could not find any issue with wiring...all looked good and no chafing. I'd looked at this already months ago and at one stage thought it might be so as after messing about with wires and adding spiralwrap I did get a period without issues. But that was last September.
More recently (last few weeks), Indy has had it and I've looked again, even messing with wires while wife observed engine running and flashing coil. Nothing changed.
Also Indy cited earlier version of my model, I take it as same golf MK6, just earlier build with different wiring loom, did have a history of wiring faults but not my model.
Indy also pulled sensor plugs to examine for corrosion - all ok.

So last few weeks almost daily, when I come to start it ....Engine fault reported (more recently) and engine light as well as flashing coil which I've had now and then for over 1 year....but now almost daily and now limp mode too.

So short of splitting wiring loom and tracing each wire/sensor related to 5V wire (which I belive indy did...that is check wires at sensor point with a needle probe through insulation as well as viewing signals with software as he has access to wiring diagram), what do I do?

If I had a wiring diagram I guess I could trace the cable....even fit a new one in parallel...but still uses existing plugs.

So only job left I think I can do is pull battery, pull ECU plug, clean contacts with spray contact cleaner, same for plug, then reconnect, then battery and hope for the best!

Thanks again for advice and comments.

**Dieseljuice** · 14-07-2022,04:32 PM

Is it worth buying second hand? My ECU model number 03L 906 018 Software version 7453?

This for example
2008-2013 MK6 VOLKSWAGEN GOLF ENGINE ECU MODULE 2.0 DIESEL CFFB 03L906018 | eBay

Vagcom.jpg

**VAG-Abound** · 14-07-2022,04:56 PM

All I can say is that people with the right skills could move your config to a 2nd hand unit. If I were you I'd ask for a "bundle" of them getting the right ECU, cloning it and fitting it. There's no point you buying a used ECU with no way to make it work, and they may want to choose what they use.

I have no idea on their success or reputation, but this came up in a search as an example of some people being able to describe what needs to be done rather than start blind: VAG Coding - Component Protection - JK Car Electrics.