Dash lit up for xmas - Engine faults

[temeraire]

Glad tidings to all. Hoping for some insight/pointers.

Just in time for xmas, last night my dashboard decided to get in the spirit and lit up with the engine warning light solid orange and the glow plug light flashing. The MFD also reported Front assist error and start/stop error. Managed to limp home and this morning did a VCDS scan. It's reporting a whole host of errors. Can anyone see an obvious single cause? Could it just be a faulty sensor or something more ominous?

I've attached the VCDS output.
Thanks,

 

[Pauly]

Battery voltages are all over the place so im guessing some are historical but would guess thats prob the root cause of a lot of those

What age is the van ?
I would get your main battery fully charged (or replaced if its the original that a few years old) then clear all the codes and start again, you only need to worry about ines that come back after

 

[temeraire]

Battery voltages are all over the place so im guessing some are historical but would guess thats prob the root cause of a lot of those

What age is the van ?
I would get your main battery fully charged (or replaced if its the original that a few years old) then clear all the codes and start again, you only need to worry about ines that come back after

Thanks Pauly. It’s a 2018 van. Battery is about 6 months old so surprising it’s like that although it has had infrequent use recently.

Makes me wonder if there is a short or drain somewhere.

There look to be a few faults referencing a brake pedal sensor?

 

[Pete C]

A low battery can throw up all sorts of errors. Definitely get it fully charged with a battery charger or long run, then see what happens.

Pete

 

[temeraire]

Thanks. I put it on a deep charge last night and cleared the faults but the following ones just keep coming back instantly.


-------------------------------------------------------------------------------
Address 01: Engine (2D2D2-CXEB) Labels:. 04L-907-309-V2.clb
Part No SW: 04L 906 056 KN HW: 04L 907 445 A
Component: R4 2.0l BTD H03 3776
Revision: 23101001
Coding: 00254014437601080000
Shop #: WSC 02762 790 50316
ASAM Dataset: EV_ECM20BTD03004L906056KN 004004
ROD: EV_ECM20BTD03004L906056KN_004.rod
VCID: 03539C24FB958D62321-8056
VINID: 9E606AAAA1D8A9A6012011C824F2145A36

2 Faults Found:
25124 - Databus
U1123 00 [00100011] - Received Error Message
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 6
Fault Frequency: 1
Mileage: 79036 km
Date: 2063.01.06
Time: 10:33:49

Engine RPM: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: 5 C
Intake air temperature: 8 C
Ambient air pressure: 1010 mbar
Voltage terminal 30: 12.148 V
Unlearning counter according OBD: 40
Acceleration: 0.000 m/s
Vehicle speed: 0 km/h
Cruise Control System (CCS): status: main switch off
Drivetrain coordinator: ACC fault status-ACC is active despite EPB deceleration: No
Drivetrain coordinator: ACC fault status-ACC active: although TSK passive: No
Drivetrain coordinator: ACC fault status-Start off or stop request at stopping speed not set: No
Drivetrain coordinator: ACC fault status-Start off and stop request sent simultaneously: No
Drivetrain coordinator: ACC fault status-ACC active: although limiter active: No
Drivetrain coordinator: ACC fault status-ACC reactivates itself after locking: No
Drivetrain coordinator: ACC fault status-ACC sends undefined signals: No
Drivetrain coordinator: ACC fault status-ACC active although main switch off: No
Drivetrain coordinator: ACC fault status-ACC is active despite driver braking: No
Drivetrain coordinator: ACC fault status-ACC is active despite ESP/ASR passive sampling: No
Drivetrain coordinator: brake function status-ABS intervention: No
Drivetrain coordinator: brake function status-ESP intervention: No
Drivetrain coordinator: brake function status-EDL intervention: No
Drivetrain coordinator: brake function status-ASR intervention: No
Drivetrain coordinator: brake function status-MSR intervention: No
Drivetrain coordinator: brake function status-Driver braking: No
Drivetrain coordinator: brake function status-HDC active: No
Drivetrain coordinator: brake function status-ESP invokes TSK braking: No
Drivetrain coordinator: brake function status-EPB active: No
Drivetrain coordinator: brake function status-ASP intervention: No
Drivetrain coordinator: brake function status-ADS intervention: No
Drivetrain coordinator: brake function status-Stopping distance reduction2 warning jolt: No
Drivetrain coordinator: brake function status-ESP sampled passive (ESP off): No
Drivetrain coordinator: brake function status-ASR sampled passive (ASR off): No
Drivetrain coordinator: brake function status-ESP recognizes vehicle at rest: No
Drivetrain coordinator: brake function status-ACC stopping distance control active: No
Drivetrain coordinator: brake fault status-Deceleration sensor not available: No
Drivetrain coordinator: brake fault status-Deceleration sensor malfunction: No
Drivetrain coordinator: brake fault status-ESP system error: No
Drivetrain coordinator: brake fault status-ESP system malfunction due to inaccurate engine torque: No
Drivetrain coordinator: brake fault status-ESP indicates TSK message consistency error: No
Drivetrain coordinator: brake fault status-TSK/ESP handshake error: No
Drivetrain coordinator: brake fault status-ESP automatic engagement malfunction: No
Drivetrain coordinator: brake fault status-Brake light implausible: No

27200 - Sensor Reference Voltage B
P0651 00 [10100011] - Open Circuit
MIL ON - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 1
Mileage: 79036 km
Date: 2063.01.06
Time: 10:33:49

Engine RPM: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: 5 C
Intake air temperature: 8 C
Ambient air pressure: 1010 mbar
Voltage terminal 30: 12.140 V
Unlearning counter according OBD: 40
Engine status: Stop
Engine running time-Pressure BIN10 bar: 0 s
Control Module temperature: 7.5 C
ESM_Battery_voltage-Voltage: 12.14 V
Low battery mode active-Bool type: No
ESM_Vext_raw-ESM_sensor_voltage: 3.2891 V
Starter control: terminal 50 feedback-Terminal 50 on CAN: not active
Starter control: terminal 50 feedback-Terminal 50 CAN valid: active
Starter control: terminal 50 feedback-Terminal 50 via cable: not active
Starter control: terminal 50 feedback-Starter relay: not active
Starter control: terminal 50 feedback-Starter operation read back wire T50Ret: not active
Starter control: terminal 50 feedback: 8
Starter control: shut-off conditions 1-Immobilizer: not active
Starter control: shut-off conditions 1-Starter shift malfunction: not active
Starter control: shut-off conditions 1-Speed: not active
Starter control: shut-off conditions 1-Drivetrain: not active
Starter control: shut-off conditions 1-Speed: not active
Starter control: shut-off conditions 1-RPM aborted starts: not active
Starter control: shut-off conditions 1-Engag. duration: not active
Starter control: shut-off conditions 1-Engag. duration aborted starts: not active
Starter control: shut-off conditions 1-Engag. duration panic start: not active
Starter control: shut-off conditions 1-new errors: not active
Starter control: shut-off conditions 1-manual start/error: not active
Starter control: shut-off conditions 1-ignition: not active
Starter control: shut-off conditions 1-Clutch error/terminal 50 malfunction: not active
Starter control: shut-off conditions 1-Direct start function: not active
Starter control: shut-off conditions 1-Engag. duration defrost.: not active
Starter control: shut-off conditions 1: 0

Readiness: N/A


-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104) Labels: 7E0-907-37x-MK100ESC.clb
Part No SW: 7E0 907 379 Q HW: 7E0 907 379 N
Component: ESC H06 0133
Revision: 00000000 Serial number: 61278000000596
Coding: 347EC098656A847F2C7C037EA68B219379F700
Shop #: WSC 02762 790 50316
ASAM Dataset: EV_Brake1ESCCONTIVN75XGP2 011001
ROD: EV_Brake1ESCCONTIVN75XGP2_011.rod
VCID: 40D95328AA03567A6F3-8014

4 Faults Found:
8208 - Databus
U1123 00 [00001001] - Received Error Message
[ACAN: MO1_Sta_Pedal signal failure value]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 1
Reset counter: 54
Mileage: 79036 km
Date: 2023.12.14
Time: 10:33:48

8216 - Databus
U1123 00 [00001001] - Received Error Message
[ACAN: MO3_FPGradient signal failure value]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 1
Reset counter: 54
Mileage: 79036 km
Date: 2023.12.14
Time: 10:33:48

8217 - Databus
U1123 00 [00001001] - Received Error Message
[ACAN: MO3_Pedalwert signal failure value]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 1
Reset counter: 54
Mileage: 79036 km
Date: 2023.12.14
Time: 10:33:48

8338 - Databus
U1123 00 [00001001] - Received Error Message
[ACAN: MO1_Pedalwert]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 1
Reset counter: 54
Mileage: 79036 km
Date: 2023.12.14
Time: 10:33:48

 

[temeraire]

Took it to Streetwise automotive today in Bristol and they recommended that it needs to go to a VW dealer.

Gave Heritage VW in Bristol a call and they said the earliest they can look at it is March!

Not quite sure what to do now.

 

[Pauly]

Looks like you still have a flat battery !
I would get that battery checked and make sure it is fully charged, if you only have a little charger they can take a surprisingly long time to charge but 12.1V on your scan is not right

 

[temeraire]

So it has been a bit of a saga and took a while but it looks like the issue is with the ECU. Apparently all the sensors that are reporting faults lead back to a single pin on the ECU which when tested has zero current. The sensors themselves when tested in isolation are working fine.

The garage were not able to find anything that may have caused it to die so I'm hoping that a new one will not suffer the same fate. They should have the new part in a few days so fingers crossed it is indeed the problem...