Help with a couple of engine and DSG fault codes please

[Depron Donkey]

My lads van had a bit of a fit this morning, EU5 T6. EML & glow plug lights came on, went into limp mode, gears not changing properly. Turned off and back on, run ok, no lights.
A few hiccups during the day, put on VCDS when he got back, gave these codes:-

4 Faults Found:
4807 - EGR System
P0401 00 [096] - Insufficient Flow
Intermittent - Not Confirmed - Tested Since Memory Clear

5172 - Boost Pressure Regulation
P0234 00 [096] - Limit Exceeded (Overboost Condition)
Intermittent - Not Confirmed - Tested Since Memory Clear

10065 - Mass Air Flow Sensor (G70)
P0104 00 [032] - Intermittent
Intermittent - Not Confirmed - Tested Since Memory Clear

5603 - Park/Neutral Switch Input Circuit
P0851 00 [100] - Short to GND
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 4
Mileage: 123616 km
Date: 2021.06.16
Time: 09:11:17

Engine speed: 953.00 /min
Normed load value: 50.2 %
Vehicle speed: 7 km/h
Coolant temperature: 89 °C
Intake air temperature: 37 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 13.120 V
Unlearning counter according OBD: 40
Accelerator pedal travel: 0.00 %
Accelerator pedal: sensor voltage 1: 740.6 mV
Accelerator pedal: sensor voltage 2: 364.8 mV
Accelerator pedal: switch positions-Bits 0-7: 9
Starter control: Interlock- or P/N-signal-Bits 0-7: 1
Limitation: torque: 91.9 Nm
Control Module temperature: 58.1 °C

Readiness: 0 0 0 0 0

-------------------------------------------------------------------------------
Address 02: Auto Trans (J743) Labels:. 0BH-927-711.clb
Part No SW: 0BT 300 046 G HW: 0BH 927 711 G
Component: DSG DQ500-7F H11 2502
Revision: 00H11V01
Coding: 0014
Shop #: WSC 00000 000 00000
ASAM Dataset: EV_TCMDQ500021 001001
ROD: EV_TCMDQ500021_001_VW36.rod
VCID: 3A7B87EFBD5F905605-806E

2 Faults Found:
10632 - No Communication with Gear Selector Module
U0103 00 [172] - -
MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 0
Fault Frequency: 13
Mileage: 123615 km
Date: 2021.06.16
Time: 09:10:33

Engine speed: 1291.00 /min
Vehicle speed: 255 km/h
Coolant temperature: 215 °C
selected gear: GANG_UNDEFINIERT
Engine torque: 120 Nm
Control Module temperature: 92 °C
Accelerator position: 31.2 %
DTC memory status: 255

10763 - Starter Enable from Selector Lever Sensor System
P1734 00 [044] - -
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 0
Fault Frequency: 6
Mileage: 123616 km
Date: 2021.06.16
Time: 09:11:16

Engine speed: 951.00 /min
Vehicle speed: 255 km/h
Coolant temperature: 215 °C
selected gear: GANG_UNDEFINIERT
Engine torque: 4 Nm
Control Module temperature: 90 °C
Accelerator position: 14.8 %
DTC memory status: 255

He has just driven it home, DSG not happy in auto but works fine in manual.
Any ideas where to start would be appreciated.
TIA

 

[mmi]

5603 - Park/Neutral Switch Input Circuit
P0851 00 [100] - Short to GND

10632 - No Communication with Gear Selector Module
U0103 00 [172] - -
MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 0
Fault Frequency: 13

10763 - Starter Enable from Selector Lever Sensor System

All three likely of same origin - see time stamps.

Communication between gearbox and gear selector?

Full scan could be useful, and certainly essential to locate relevant wiring diagram.

 

[Depron Donkey]

All three likely of same origin - see time stamps.

Communication between gearbox and gear selector?

Full scan could be useful, and certainly essential to locate relevant wiring diagram.

Thanks for your thoughts. I did a full scan, that's what I took the text from, file attached. Any help gratefully accepted!
Andy.

 

[Loz]

Check fuses SB24 and SB5 (engine compartment in front of coolant reservoir)

 

[Depron Donkey]

Check fuses SB24 and SB5 (engine compartment in front of coolant reservoir)
View attachment 119995View attachment 119996View attachment 119997

Thanks Loz, are the wiring diagrams available as DL in VIP members area?

 

[Loz]

Here is a list of resources you might need;

SB Fuse Chart https://www.t6forum.com/downloads/vw-t6-fusebox-fusebox-fuse-chart-sb-engine-fusebox.43/
SB Fuse Box https://www.t6forum.com/downloads/fuse-box-layout-map-box-b.79/
removing DSG selector https://www.t6forum.com/downloads/removing-the-dsg-selector.74/
removing gaiter https://www.t6forum.com/downloads/removing-the-gear-lever-gaiter.73/
DSG Wiring diagram https://www.t6forum.com/downloads/dual-clutch-gearbox-dsg.207/download

 

[mmi]

Thanks for your thoughts. I did a full scan, that's what I took the text from, file attached. Any help gratefully accepted!
Andy.

Does the backlight of gear selector symbols (P/R/D) work? - Just a simple check to verify that connector T10an of E313 is (at least partially) in place.

Another easy to do diagnostics would be to exctract measurement blockmaps of 01-Engine, 02-Transmission and 17-Instruments so could check for any irregularities in communications. However, at this point probably won't give any more clues but might be useful as future reference.... so definitely would be appreciated.

VCDS -> Applications -> Controller Channel Map ->



Tick/fill boxes as above (Single controller addresses 01 02, and 17) and hit Go
When done there will be files blockmap-XX-YYYY....CSV in directory C:\Ross-Tech\VCDS\Logs\....

 

[Loz]

I once threw some major faults on mine when I slammed it into sport (pre-TVS ) for a quick overtake and then going back to D I went too far briefly hit N then back to D and the dash lit up like a Christmas tree. I had to pull over later and do a quick reset with Carista. So it's possible the selector switches can cause a muddle, I would look at the measuring blocks to see if you can see if the module can see where the selector is etc.

 

[Depron Donkey]

Here is a list of resources you might need;

SB Fuse Chart https://www.t6forum.com/downloads/vw-t6-fusebox-fusebox-fuse-chart-sb-engine-fusebox.43/
SB Fuse Box https://www.t6forum.com/downloads/fuse-box-layout-map-box-b.79/
removing DSG selector https://www.t6forum.com/downloads/removing-the-dsg-selector.74/
removing gaiter https://www.t6forum.com/downloads/removing-the-gear-lever-gaiter.73/
DSG Wiring diagram https://www.t6forum.com/downloads/dual-clutch-gearbox-dsg.207/download

Thanks again Loz!

 

[rolla]

Engine speed: 1291.00 /min
Vehicle speed: 255 km/h

..... that's some gearing fitted too .... barely past tickover at 160mph

 

[catfood12]

Engine speed: 1291.00 /min
Vehicle speed: 255 km/h

..... that's some gearing fitted too .... barely past tickover at 160mph

So max possible reportable speed is 2^8 KM/H. Who knew. I guess the Porkers and Bugattis have more than 8 bits for the speed measurement.