2.0tdi just died after drove it home.

[salukki]

So i just drive it home from work and during drive glow plug Light flashed and when i got home car just died. Alot of errors and doesnt start anymore at all. Doesnt connect to engine module so can not read codes from there

Car: Seat Leon FR
Year: 2013
Body type: Hatchback
Engine: CKFC
Mileage: 317300 KM

---------------------------------------------------------------
03 Brakes

System description: ESC
Software number: 5Q0907379A
Software version: 0333
Hardware number: 5Q0907379A
Hardware version: H75
ODX name: EV_Brake1UDSContiMK100ESP
ODX version: 008020
Long coding: 20EE629220210A72007E060901C3240446045000608024F200690020C0

Trouble codes:
U112100 - Databus missing message
static
Date: 2022-05-24 06:21:32
Mileage: 317300 km
Priority: 6
Malfunction frequency counter: 1
Unlearning counter: 89
Freezeframes: 0002001A12000000A80000000000000000000000000000
U112100 - Databus missing message
static
Date: 2022-05-24 06:21:32
Mileage: 317300 km
Priority: 6
Malfunction frequency counter: 1
Unlearning counter: 89
Freezeframes: 0002001A12000000A80000000000000000000000000000
U112100 - Databus missing message
static
Date: 2022-05-24 06:21:25
Mileage: 317300 km
Priority: 6
Malfunction frequency counter: 1
Unlearning counter: 89
Freezeframes: 0002001A12000000A80000000000000000000000000000
U112100 - Databus missing messagestatic
Date: 2022-05-24 06:21:25
Mileage: 317300 km
Priority: 6
Malfunction frequency counter: 1
Unlearning counter: 89
Freezeframes: 0002001A12000000A80000000000000000000000000000
U112100 - Databus missing message
static
Date: 2022-05-24 06:21:25
Mileage: 317300 km
Priority: 6
Malfunction frequency counter: 2
Unlearning counter: 89
Freezeframes: 0002001A12000000A80000000000000000000000000000
U112100 - Databus missing message
static
Date: 2022-05-24 06:21:25
Mileage: 317300 km
Priority: 6
Malfunction frequency counter: 1
Unlearning counter: 89
Freezeframes: 0002001A12000000A80000000000000000000000000000
C114602 - Tire pressure monitoring display Signal error
static
Date: 2022-05-24 06:21:37
Mileage: 317300 km
Priority: 6
Malfunction frequency counter: 1
Unlearning counter: 89
Freezeframes: 0002001A12000000A80000000000000000000000000000


---------------------------------------------------------------
08 Air Conditioning

System description: Climatronic
Software number: 5F0907044A
Software version: 0503
Hardware number: 5F0907044A
Hardware version: H02
ODX name: EV_ACClimaBHBVW37X
ODX version: 002017
Long coding: 00000104202100011005000000101000

Trouble codes:
No trouble codes found

---------------------------------------------------------------
09 Central Electrics

System description: BCM MQBAB H
Software number: 5Q0937084Q
Software version: 0106
Hardware number: 5Q0937084Q
Hardware version: H14
Serial number: 00011301000701
ODX name: EV_BCMCONTI
ODX version: 010001
Long coding:98CCC000000000005C0000CC000800000065

Trouble codes:
No trouble codes found

---------------------------------------------------------------
16 Steering Column

System description: Lenks. Modul
Software number: 5Q0953507AC
Software version: 0070
Hardware number: 5Q0953549
Hardware version: 007
Serial number: 15011304221764
ODX name: EV_SMLSKLOMQB
ODX version: 009001
Long coding: 9400

Trouble codes:
No trouble codes found

---------------------------------------------------------------
17 Dashboard

System description: KOMBI
Software number: 5F0920860J
Software version: 0556
Hardware number: 5F0920860J
Hardware version: 236
ODX name: EV_DashBoardVDDMQBAB
ODX version: 008026
Long coding: 07A402002980000800082A00000000

Trouble codes:
No trouble codes found

---------------------------------------------------------------
19 Gateway

System description: GW MQB High
Software number: 5Q0907530M
Software version: 2147
Hardware number: 5Q0907530M
Hardware version: 212
Serial number: 20061810800003
ODX name: EV_GatewConti
ODX version: 009011
Long coding: 030100F40B087300EF0002C8080F00010001000000000000000000000000

Subsystems:
System description: J367-BDM
Software version: 0192
Hardware version: H08
Serial number: 00000000002990850456

System description: E221__MFL-PR6
Software version: 0100
Hardware version: H03
Serial number: 000000000A0144071212
Long coding: 002000Trouble codes:
U000900 - High Speed CAN Communication Bus (-) shorted to Bus (+)
static


---------------------------------------------------------------
42 Driver Door

System description: TSG FS
Software number: 5Q4959593
Software version: 0006
Hardware number: 5Q4959593
Hardware version: 007
Serial number: 0000048459210
ODX name: EV_DCUDriveSideEWMAXCONT
ODX version: 006001
Long coding: 00100300DC00040000001000

Trouble codes:
No trouble codes found

---------------------------------------------------------------
44 Steering Assistance

System description: EPS_MQB_ZFLS
Software number: 5Q0909144P
Software version: 1043
Hardware number: 5Q0909144P
Hardware version: 122
ODX name: EV_SteerAssisMQB
ODX version: 010031
Long coding: 0103

Trouble codes:
No trouble codes found

---------------------------------------------------------------
52 Passenger Door

System description: TSG BFS
Software number: 5Q4959592
Software version: 0006
Hardware number: 5Q4959592
Hardware version: 007
Serial number: 0000046397714
ODX name: EV_DCUPasseSideEWMAXCONT
ODX version: 006001
Long coding: 00100300DC00040000001000

Trouble codes:
No trouble codes found

---------------------------------------------------------------
55 Headlight Regulation

System description: LWR-ECU
Software number: 5Q0907357
Software version: 0070
Hardware number: 6R0907357A
Hardware version: 005
Serial number: --------------
ODX name: EV_HeadlRegulVWLWRMQB
ODX version: 001110
Long coding: 048A000009000000

Trouble codes:
No trouble codes found

---------------------------------------------------------------
5F Multimedia

System description: MU-E--ER
Software number: 5F0035869
Software version: 0086
Hardware number: 5F0035869
Hardware version: 164
Serial number: 00003797510800002332
ODX name: EV_MUEnt4CCONT
ODX version: 004052
Long coding: 04730000FF00000011110001000100002F0007840000010000

Trouble codes:
No trouble codes found

 

[adam davies]

So i just drive it home from work and during drive glow plug Light flashed and when i got home car just died. Alot of errors and doesnt start anymore at all. Doesnt connect to engine module so can not read codes from there

Car: Seat Leon FR
Year: 2013
Body type: Hatchback
Engine: CKFC
Mileage: 317300 KM

---------------------------------------------------------------
03 Brakes

System description: ESC
Software number: 5Q0907379A
Software version: 0333
Hardware number: 5Q0907379A
Hardware version: H75
ODX name: EV_Brake1UDSContiMK100ESP
ODX version: 008020
Long coding: 20EE629220210A72007E060901C3240446045000608024F200690020C0

Trouble codes:
U112100 - Databus missing message
static
Date: 2022-05-24 06:21:32
Mileage: 317300 km
Priority: 6
Malfunction frequency counter: 1
Unlearning counter: 89
Freezeframes: 0002001A12000000A80000000000000000000000000000
U112100 - Databus missing message
static
Date: 2022-05-24 06:21:32
Mileage: 317300 km
Priority: 6
Malfunction frequency counter: 1
Unlearning counter: 89
Freezeframes: 0002001A12000000A80000000000000000000000000000
U112100 - Databus missing message
static
Date: 2022-05-24 06:21:25
Mileage: 317300 km
Priority: 6
Malfunction frequency counter: 1
Unlearning counter: 89
Freezeframes: 0002001A12000000A80000000000000000000000000000
U112100 - Databus missing messagestatic
Date: 2022-05-24 06:21:25
Mileage: 317300 km
Priority: 6
Malfunction frequency counter: 1
Unlearning counter: 89
Freezeframes: 0002001A12000000A80000000000000000000000000000
U112100 - Databus missing message
static
Date: 2022-05-24 06:21:25
Mileage: 317300 km
Priority: 6
Malfunction frequency counter: 2
Unlearning counter: 89
Freezeframes: 0002001A12000000A80000000000000000000000000000
U112100 - Databus missing message
static
Date: 2022-05-24 06:21:25
Mileage: 317300 km
Priority: 6
Malfunction frequency counter: 1
Unlearning counter: 89
Freezeframes: 0002001A12000000A80000000000000000000000000000
C114602 - Tire pressure monitoring display Signal error
static
Date: 2022-05-24 06:21:37
Mileage: 317300 km
Priority: 6
Malfunction frequency counter: 1
Unlearning counter: 89
Freezeframes: 0002001A12000000A80000000000000000000000000000


---------------------------------------------------------------
08 Air Conditioning

System description: Climatronic
Software number: 5F0907044A
Software version: 0503
Hardware number: 5F0907044A
Hardware version: H02
ODX name: EV_ACClimaBHBVW37X
ODX version: 002017
Long coding: 00000104202100011005000000101000

Trouble codes:
No trouble codes found

---------------------------------------------------------------
09 Central Electrics

System description: BCM MQBAB H
Software number: 5Q0937084Q
Software version: 0106
Hardware number: 5Q0937084Q
Hardware version: H14
Serial number: 00011301000701
ODX name: EV_BCMCONTI
ODX version: 010001
Long coding:98CCC000000000005C0000CC000800000065

Trouble codes:
No trouble codes found

---------------------------------------------------------------
16 Steering Column

System description: Lenks. Modul
Software number: 5Q0953507AC
Software version: 0070
Hardware number: 5Q0953549
Hardware version: 007
Serial number: 15011304221764
ODX name: EV_SMLSKLOMQB
ODX version: 009001
Long coding: 9400

Trouble codes:
No trouble codes found

---------------------------------------------------------------
17 Dashboard

System description: KOMBI
Software number: 5F0920860J
Software version: 0556
Hardware number: 5F0920860J
Hardware version: 236
ODX name: EV_DashBoardVDDMQBAB
ODX version: 008026
Long coding: 07A402002980000800082A00000000

Trouble codes:
No trouble codes found

---------------------------------------------------------------
19 Gateway

System description: GW MQB High
Software number: 5Q0907530M
Software version: 2147
Hardware number: 5Q0907530M
Hardware version: 212
Serial number: 20061810800003
ODX name: EV_GatewConti
ODX version: 009011
Long coding: 030100F40B087300EF0002C8080F00010001000000000000000000000000

Subsystems:
System description: J367-BDM
Software version: 0192
Hardware version: H08
Serial number: 00000000002990850456

System description: E221__MFL-PR6
Software version: 0100
Hardware version: H03
Serial number: 000000000A0144071212
Long coding: 002000Trouble codes:
U000900 - High Speed CAN Communication Bus (-) shorted to Bus (+)
static


---------------------------------------------------------------
42 Driver Door

System description: TSG FS
Software number: 5Q4959593
Software version: 0006
Hardware number: 5Q4959593
Hardware version: 007
Serial number: 0000048459210
ODX name: EV_DCUDriveSideEWMAXCONT
ODX version: 006001
Long coding: 00100300DC00040000001000

Trouble codes:
No trouble codes found

---------------------------------------------------------------
44 Steering Assistance

System description: EPS_MQB_ZFLS
Software number: 5Q0909144P
Software version: 1043
Hardware number: 5Q0909144P
Hardware version: 122
ODX name: EV_SteerAssisMQB
ODX version: 010031
Long coding: 0103

Trouble codes:
No trouble codes found

---------------------------------------------------------------
52 Passenger Door

System description: TSG BFS
Software number: 5Q4959592
Software version: 0006
Hardware number: 5Q4959592
Hardware version: 007
Serial number: 0000046397714
ODX name: EV_DCUPasseSideEWMAXCONT
ODX version: 006001
Long coding: 00100300DC00040000001000

Trouble codes:
No trouble codes found

---------------------------------------------------------------
55 Headlight Regulation

System description: LWR-ECU
Software number: 5Q0907357
Software version: 0070
Hardware number: 6R0907357A
Hardware version: 005
Serial number: --------------
ODX name: EV_HeadlRegulVWLWRMQB
ODX version: 001110
Long coding: 048A000009000000

Trouble codes:
No trouble codes found

---------------------------------------------------------------
5F Multimedia

System description: MU-E--ER
Software number: 5F0035869
Software version: 0086
Hardware number: 5F0035869
Hardware version: 164
Serial number: 00003797510800002332
ODX name: EV_MUEnt4CCONT
ODX version: 004052
Long coding: 04730000FF00000011110001000100002F0007840000010000

Trouble codes:
No trouble codes found

First check is check battery is charged and is charging( measure voltage and drop test), check cables are tight.

 

[salukki]

Update on it. Started fine after i woke up. Could read all errors etc. Now when went to work did same but after turning it off and starting again its like nothing happened

 

[SteveGSXR600K1]

It does sound like a battery issue. Do a quick battery check with

 

[SuperV8]

Update on it. Started fine after i woke up. Could read all errors etc. Now when went to work did same but after turning it off and starting again its like nothing happened

I would be checking battery cables are tight with good continuity. Has any work been done recently on it?

 

[salukki]

Will do a check on battery. No there hasnt been done any work on it. Only few coding stuff (turning fog lights and one button fold mirrors). The esc problem started during winter. It just randomly started giving us esc error and now it goes into a full meltdown. Alot of databus missing message errors wich atm disappear by clearing them.

 

[salukki]

Did the battery check inside car. Said 80% wich i think should be ok? Checked fuses aswell all seemed ok. Now car doesnt start again. Fan just starts to spin and No crank/start. Alot of errors

 

[adam davies]

Did the battery check inside car. Said 80% wich i think should be ok? Checked fuses aswell all seemed ok. Now car doesnt start again. Fan just starts to spin and No crank/start. Alot of errors

Any updates.
, You should check battery with a drop test not the inbuilt one in car doubt thats accurate probably time and voltage based not measuring capacity(amps) also check and unplug wiring harness going into ecu and check contacts (spray with electrical cleaner). Then also try to read fault codes after youve confirmed all the above. Then let us know and go from there.

 

[salukki]

Did a drop test that was ok. Havent checked ecu yet. Havent had time to dig it out under the wiper stuff. Atm there is no errors in the car. Car starts fine again. So it makes me think its some sort of bad connection somewhere but to find the bad connection is another story.

 

[Ricky88]

It sounds very intermittent, could be something like the ignition switch perhaps?

 

[salukki]

Yes its very random. Ignition sounds very unlikely to my ears bcs the car starts for like 1 second Whenever it is in error mode.

 

[Chris Bartram]

That error with the high-speed CAN sounds dodgy, is it worth looking for chafed cables? Often starting then dying quickly can be an immobiliser issue- if it can't read the chip in the key, for example.

 

[mty12345]

19 Gateway

System description: GW MQB High
Software number: 5Q0907530M
Software version: 2147
Hardware number: 5Q0907530M
Hardware version: 212
Serial number: 20061810800003
ODX name: EV_GatewConti
ODX version: 009011
Long coding: 030100F40B087300EF0002C8080F00010001000000000000000000000000

Subsystems:
System description: J367-BDM
Software version: 0192
Hardware version: H08
Serial number: 00000000002990850456

System description: E221__MFL-PR6
Software version: 0100
Hardware version: H03
Serial number: 000000000A0144071212
Long coding: 002000Trouble codes:
U000900 - High Speed CAN Communication Bus (-) shorted to Bus (+)
static

What Chris said here is right. The Shorted CAN line fault in the gateway module will probably stop the car starting whenever that happens. It could be any module in the car, but seeing as you can't communticate with the ECU when the fault happens, then I'd say there is a 95% chance that is where the problem lies.

I'd start by checking the power and grounds to the ECU, checking for corrosion inside the ECU wiring connectors, and checking the wiring around the ECU module, looking for any broken wires.
It could also be an internal fault with the ECU itself, the CAN gateway module, or even a different module entirely. If it gets to that point then you will need someone with an occillascope to view the CAN signal while unplugging different modules to try and trace the fault. Your average garage is not going to be able to do this, it will need to be a dealer or someone who specialises in electrical fault finding.

 

[SuperV8]

I have recently seen 2x different cars damaged by rodents - probably mice.
One made a nice nest in my friends Rangerover Evoque air intake, the other had a dinner out of my parents washer bottle cap - luckily appears to be no more nibbling!

Is there a chance a mouse could have nibbled some wires?

 

[Chris Bartram]

As the CAN gateway is reporting the short, is it worth buying/begging/borrowing one and installing it to see if the fault goes away? If the fault stays, then go round the rest of the modules looking for cable damage or water damage, unplug them one-by-one and see what changes?

I'd have guessed at damaged cables, but as stated above, there could be a faulty module shorting the bus, and as it seems to clear after an overnight stand, maybe that's it? AIUI high-speed CAN has a 120 ohm termination either end, so is it worth putting a multiumeter on the bus, checking for a short, then unplugging modules or moving cables to see if it changes?

Good point about mice, happens more than you'd think.

[disclaimer: I'm not that experienced with CAN, just seems like a possibility]

 

[mty12345]

If the short was on the gateway module itself, then i'm 99% sure he wouldn't have coms with any modules, but i could be wrong. The trouble is Gateway modules need coding to the car so you can't just swap them to test, and I don't know how much a module is, but it's probably not cheap even second hand.

If it was shorted to ground then that would be a easy option with the multimeter, but that fact that it's shorted to + makes it a bit more complicated, as you would also need to find which circuit/voltage rail it's shorted to.
The fact that it is shorted to + rather than ground, makes me think it's probably not a wiring issue, and much more likely that it's a componant level issue inside one of the modules. To have a break in a CAN wire would be one thing, but for it then to find a volatge source would be even less likely IMO. That being said, i think the wiring needs to be ruled out before condeming a module,

If the OP is good with that sort of thing then it's definitely an option to have a dig around with the wiring diagram and a DMM, but probably not a good idea and the results will be pretty meaningless to 99% of people.

It would probably take a auto electrician with an oscilloscope less than an hour to diagnose. Probably the best option for most people.