Scanned car... Errors everywhere!?

[TomST]

Hello all! I've recently started having issues with my Leon Sport Tourer 2014 1.6TDI. It started just before Christmas where it failed to start first time and 3 errors flagged up on the dash (TPMS, Headlight regulator and ESC error) after turning it off then trying again it worked and nothing came up since. Then recently I was pulling off and the revs dropped like it went into limp mode and ESC error came up again but then it drove normally, this has happened again this weekend so I scanned the car and it picked up around 36 faults but spread through all modules and all of them are DATABUS MISSING MESSAGE then a few more which say the High Level brake light circuit is open and Lost communication with ECM/PCM. I had LED bulbs for the interior which one had started flickering so I changed them all back to the original and cleared all codes. I'll post the scan below and hopefully someone has an idea as to what is happening

 

[TomST]

OBDeleven data log

Date: 2019-01-26 13:35

VIN: VSSZZZ5FZER123358
Car: Seat Leon
Year: 2014
Body type: Sports Tourer
Engine: CRKB 81 kW (110 HP) 1.6 l
Mileage: 58551 KM

---------------------------------------------------------------
01 Engine

System description: R4 1,6L EDC
Software number: 04L906021FD
Software version: 6544
Hardware number: 04L907309E
Hardware version: H22
ODX name: EV_ECM16TDI01104L906021FD
ODX version: 002004
Long coding: 01190012032501090000

Trouble codes:
U112300 - Databus error value received
Intermittent
Date: 2019-01-19 14:56:37
Mileage: 58436 km
Priority: 6
Malfunction frequency counter: 2
Unlearning counter: 255
Engine speed: 0.00 1/min
Normed load value: 0.0 %
Vehicle speed: 5 km/h
Coolant temperature: 41 °C
Intake air temperature: 22 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 12.880 V
Dynamic environmental data: 20962517E0000017DD0417DE00011187FEC8


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

System description: EMB8 EHCB
Software number: 5Q0907379R
Software version: 0356
Hardware number: 5Q0907379F
Hardware version: H31
Serial number: 6098400000096E
ODX name: EV_Brake1UDSContiMK100ESP
ODX version: 033001
Long coding: 19EE8A922422096F007A060541CB249851249000608224F200410070C009

Trouble codes:
U112100 - Databus missing message
Intermittent
U112100 - Databus missing message
Intermittent
U112100 - Databus missing message
Intermittent
U112100 - Databus missing message
Intermittent
U112100 - Databus missing message
Intermittent
U112100 - Databus missing message
Intermittent
U112300 - Databus error value received
Intermittent
U112200 - Databus implausible message
Intermittent
C114602 - Tire pressure monitoring display Signal error
Intermittent

 

[TomST]

08 Air Conditioning

System description: AC Manuell
Software number: 5F0907426H
Software version: 0705
Hardware number: 5F0907426H
Hardware version: H01
ODX name: EV_ACManueBHBVW37X
ODX version: 003017
Long coding: 02100104202100001000000000001000

Trouble codes:
U112300 - Databus error value received
Intermittent
U112100 - Databus missing message
Intermittent
B10CD00 - Function limitation due to energy management
Intermittent
P171900 - Function restriction by engine control module
Intermittent


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

System description: BCM MQBAB H
Software number: 5Q0937084AE
Software version: 0124
Hardware number: 5Q0937084AE
Hardware version: H16
Serial number: 00011409403334
ODX name: EV_BCMCONTI
ODX version: 012001
Long coding: 0B000A424241005B03A04000B10403081000000000000000000000000000

Subsystems:
System description: WWS370 140321
Software version: 0574
Hardware version: 041
Serial number: 140326235027
Long coding: 0BC5FD

System description: Sensor, DWA
Software version: 0315
Hardware version: 005
Serial number: 000000000ZY140513UWT

System description: Sirene, DWA
Software version: 0311
Hardware version: 004
Serial number: 00000000000059443762

Trouble codes:
B12C615 - Bulb for high-mount brake light Open circuit/short circuit to B+
static
U112100 - Databus missing message
Intermittent
U112100 - Databus missing message
Intermittent
U112100 - Databus missing message
Intermittent
U112100 - Databus missing message
Intermittent
U112100 - Databus missing message
Intermittent


---------------------------------------------------------------
15 Airbag

System description: Airbag VW20
Software number: 3Q0959655AC
Software version: 0189
Hardware number: 3Q0959655AC
Hardware version: 012
Serial number: 003P4P88W6E$
ODX name: EV_AirbaVW20TS6VW48X
ODX version: 001116
Long coding: 98CCC000000000005C0000CC008800000065

Subsystems:
System description: SideSensor_Df
Software version: 0887
Hardware version: 008
Serial number: 3576U000000E4D696F0W
Long coding: 2D2D2D

System description: SideSensor_Pf
Software version: 0887
Hardware version: 008
Serial number: 3586U0000002EA60AF0N
Long coding: 2D2D2D

System description: SideSensor_Dr
Software version: 0148
Hardware version: 111
Serial number: 3516R85176103000000U
Long coding: 2D2D2D

System description: SideSensor_Pr
Software version: 0148
Hardware version: 111
Serial number: 3526RE7A9F502000000J
Long coding: 2D2D2D

System description: FrontSensor_D
Software version: 0149
Hardware version: 114
Serial number: 3556V5FC84003000000B
Long coding: 2D2D2D

Trouble codes:
U112100 - Databus missing message
Intermittent
U112100 - Databus missing message
Intermittent
U112100 - Databus missing message
Intermittent

 

[TomST]

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

System description: Lenks. Modul
Software number: 5Q0953507AC
Software version: 0070
Hardware number: 5Q0953549
Hardware version: 007
Serial number: 16041404400824
ODX name: EV_SMLSKLOMQB
ODX version: 009001
Long coding: 1400

Trouble codes:
No trouble codes found

---------------------------------------------------------------
17 Dash Board

System description: KOMBI
Software number: 5F0920971H
Software version: 2210
Hardware number: 5F0920971H
Hardware version: 303
ODX name: EV_DashBoardVDDMQBAB
ODX version: 008031
Long coding: 27A412002980260001086A00000000

Trouble codes:
U112100 - Databus missing message
Intermittent
U112100 - Databus missing message
Intermittent


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

System description: GW MQB High
Software number: 5Q0907530Q
Software version: 1164
Hardware number: 5Q0907530F
Hardware version: 125
Serial number: 0001926689
ODX name: EV_GatewLear
ODX version: 010015
Long coding: 030100F40B087300EF000448080F00010001000000000000000000000000

Subsystems:
System description: J367-BDMHella
Software version: 8043
Hardware version: H03
Serial number: 4209913103

System description: E221__MFL-PR6
Software version: 0120
Hardware version: H03
Serial number: 000000000A0333130214
Long coding: 002000

Trouble codes:
U010000 - Lost Communication with ECM/PCM
Intermittent


---------------------------------------------------------------
42 Door Electronics Driver Side

System description: TSG FS
Software number: 5Q4959593B
Software version: 0014
Hardware number: 5Q4959593B
Hardware version: 009
Serial number: 0000098162615
ODX name: EV_DCUDriveSideEWMAXCONT
ODX version: 006001
Long coding: 00100220C001040000001000

Subsystems:
System description: FOND_FHSG_DRV
Software version: 0005
Hardware version: 005
Serial number: 00000000000002337889
Long coding: 2D0000

Trouble codes:
U112100 - Databus missing message
Intermittent


---------------------------------------------------------------
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:
U112100 - Databus missing message
Intermittent
U112100 - Databus missing message
Intermittent
U112100 - Databus missing message
Intermittent
U112100 - Databus missing message
Intermittent
U112300 - Databus error value received
Intermittent
U112100 - Databus missing message
Intermittent

 

[TomST]

52 Door Electronics Passenger Side

System description: TSG BFS
Software number: 5Q4959592B
Software version: 0014
Hardware number: 5Q4959592B
Hardware version: 009
Serial number: 0000097620964
ODX name: EV_DCUPasseSideEWMAXCONT
ODX version: 006001
Long coding: 00100220CC01040000001000

Subsystems:
System description: FOND_FHSG_PSG
Software version: 0005
Hardware version: 005
Serial number: 00000000000002124333
Long coding: 350000

Trouble codes:
U112100 - Databus missing message
Intermittent


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

System description: LWR-ECU
Software number: 5Q0907357
Software version: 0080
Hardware number: 6R0907357A
Hardware version: 005
Serial number: --------------
ODX name: EV_HeadlRegulVWLWRMQB
ODX version: 001110
Long coding: 038C000009000000

Trouble codes:
U112100 - Databus missing message
Intermittent


---------------------------------------------------------------
5F Information Control Unit

System description: MU-S-ND-ER
Software number: 5F0035858A
Software version: 0480
Hardware number: 5F0035858A
Hardware version: 040
Serial number: E5F01504140194
ODX name: EV_MUStd6C1PASE
ODX version: 002030
Long coding: 04730301D70A000021111101000800002F0203860100010046

Subsystems:
System description: ABTmin_Std_Nv
Software version: 0032
Hardware version: H60
Serial number: SEZ8Z9PT9008CH

System description: ECE 2014
Software version: 0036
Hardware version: ---
Serial number: --------------------

Trouble codes:
U101400 - Control module incorrectly coded
static
B201A00 - Checking software version management
static
U112100 - Databus missing message
Intermittent

 

[TomST]

Can I add that I noticed the high level brake light is cracked which I'm aware is a common fault and there is water inside which could be causing the errors is its shorting the circuit? That's just my guess

 

[Cupra Russ]

In my limited knowledge, I would suggest probably one sensor is faulty which often on modern cars, throws everything else out?

Hopefully find the faulty sensor and all should be hunky-dory again.

Good luck!

 

[TomST]

In my limited knowledge, I would suggest probably one sensor is faulty which often on modern cars, throws everything else out?

Hopefully find the faulty sensor and all should be hunky-dory again.

Good luck!

Funnily enough it only started happening after I had new tires on the rear... Possible the fitters could have damaged an ABS sensor?

 

[Cupra Russ]

Funnily enough it only started happening after I had new tires on the rear... Possible the fitters could have damaged an ABS sensor?

Certainly possible. It's sensors like that which can cause the problems.

On an old Mk4 V5 Golf I had, the MAS (mass air sensor) was faulty, it through everything else out and my dashboard looked like a christmas tree!

Hopefully a more advanced scanner should be able to tell you exactly what's out?

 

[TomST]

Certainly possible. It's sensors like that which can cause the problems.

On an old Mk4 V5 Golf I had, the MAS (mass air sensor) was faulty, it through everything else out and my dashboard looked like a christmas tree!

Hopefully a more advanced scanner should be able to tell you exactly what's out?

I'm going to take it to Midland VW as I don't trust dealerships but I'm hoping their software can find it as I know OBDELEVEN is more for adaptations than full code reading. I will post an update once sorted, if anyone has any ideas feel free to share!

 

[stu_m]

Are you on facebook? if so try here

https://www.facebook.com/groups/vcdsusersuk/

There is some very knowledgeable people on there

 

[Deleted member 103408]

Dying batteries cause very strange things to happen to the car, and obviously the cold snap does make the battery suffer more.

Have you made any changes to the car using OBD11 or any other tool for that matter as U112100 is normally associated with turning on a feature that the car does not support (for example when I turned on Blind Spot activation I got this as i did not have the correct control units / hardware

 

[TomST]

Are you on facebook? if so try here

https://www.facebook.com/groups/vcdsusersuk/

There is some very knowledgeable people on there

I'll give that a go thanks!

 

[TomST]

Dying batteries cause very strange things to happen to the car, and obviously the cold snap does make the battery suffer more.

Have you made any changes to the car using OBD11 or any other tool for that matter as U112100 is normally associated with turning on a feature that the car does not support (for example when I turned on Blind Spot activation I got this as i did not have the correct control units / hardware

I've had the battery checked by my uncle in the RAC and it came back that it's a healthy battery as that was our first thought but his scanner shows the same errors. I haven't made any major changes with OBDELEVEN only the ones the app says are possible like needle sweep, carbon background FIS, phasing indicators. I'll double check the history though thanks

 

[ramborobert]

My thought was also low battery or A loose connection somewhere maybe a main ground wire or ecu. Anyways I'd just clear them all and check again in a week.

 

[TomST]

UPDATE: I continued to ignore this error as my battery was checked and came back fine so I thought it was down to the cold weather. I then decided to take it to Midland VW who claim to be specialist and they said it's the ECU and it will cost £1500 to replace which I turned down so I was booked in tomorrow to part exchange it on the sly but it broke down last night and wouldn't start, AA came out who miraculously traced it to relay #645 under the bonnet after tapping them all. He picked up a new one and fitted it roadside and fixed it! The old relay copper coils inside had burnt out and wasn't making a connection which is why it wouldn't always start and sometimes it would. HAPPY DAYS!

 

[DEAN0]

So the question is - were Midland VW going to replace just that relay and ream you for £1500 claiming they had fitted a new ECU !!!!!!!!

 

[Copra68]

Your should have more faith in main dealers, the top technicians go on many training courses and often see the same faults and know what causes them. That was good that it was only a relay but I wouldn't go back to the garage who wanted to change the ecu.

 

[Norbert]

Your should have more faith in main dealers, the top technicians go on many training courses and often see the same faults and know what causes them. That was good that it was only a relay but I wouldn't go back to the garage who wanted to change the ecu.

If these guys the top technicians better to go back to horses...
They cant fix cars and no matter which brand.

 

[Copra68]

If these guys the top technicians better to go back to horses...
They cant fix cars and no matter which brand.

He took it to an independent vw specialist who diagnosed it wrong.......