EGR Issues - Ongoing problem.

[LakesT6]

Van spec: MY18 204tdi DSG, covered 43k.

During the warranty period the EGR has been flushed 7 times, approximately every 6k miles. The last flush was done in January 2020. Each time the fault code was P0401 EGR insufficient flow.

The warranty expired in February and the van is now showing the same fault. I’ve booked it into the van centre later this month and told them about my dissatisfaction with the product and reminded them that they had 7 chances to fix this. I’ve got a case ongoing with VWVC customer care but I haven’t got any faith in them.

The van is on finance with VWFS, does anyone know whether they would put some pressure on VW to get this sorted? I’m fed up with this now and it’s taking the shine off my ownership.

I’d also like to know whether the EGR and cooler is now and updated part.

Answers on a postcard

 

[Spaghetti]

I had a new EGR fitted last October and the part had a revised part number and was manufactured in the August. I bought it in the September so they obviously have a high throughput!

 

[LakesT6]

@Spaghetti that’s interesting, did you have problems with the EGR during the warranty period?

 

[Spaghetti]

@Spaghetti that’s interesting, did you have problems with the EGR during the warranty period?

I had one Adblue error in the warranty period where it gave the dreaded 650 mile countdown and yellow bottle symbol so I booked it in, but it cleared after a couple of hundred miles so I cancelled the appointment. That was at about 25k miles.

The Adblue fault and elevated NOx readings from the dodgy EGR appeared to be related on mine.

 

[LakesT6]

I had the same last year after filling the Adblue, like yours it sorted itself out. No issues with the DPF either, the light has never illuminated. What puzzles me is the recurring nature of the problem.

On a side note, what would be the worst pattern of journey and driving style for the EGR systems life span?

 

[Howzat]

Time to get your angry face on. 7 flushes is just ridiculous and you have every right to demand they replace the EGR like they should have done when it went in for the 3rd flush.

On a side note would it be worth considering the £800 2 year extended warranty once this issue is resolved?

 

[Spaghetti]

I had the same last year after filling the Adblue, like yours it sorted itself out. No issues with the DPF either, the light has never illuminated. What puzzles me is the recurring nature of the problem.

On a side note, what would be the worst pattern of journey and driving style for the EGR systems life span?

I’ve had no problems with the DPF on mine (touch wood!) .
I don’t know the pattern of the opening of the EGR so difficult to say which driving style is worse, although a cold diesel tends to be more sooty than a warm one, so lots of cold starts would seem to be problematic.

I tended to get the engine emissions light when I was on the motorway with the cruise on, but that could just be a coincidence.

 

[Higgidav]

I tended to get the engine emissions light when I was on the motorway with the cruise on, but that could just be a coincidence.

Same for me but only after a really long run using cruise.

 

[LakesT6]

@Higgidav that sounds the same as mine, it normally occurs after a few hours on the motorway.

 

[Spaghetti]

Same for me but only after a really long run using cruise.

Yep! Same as. It was an issue on a 300 mile journey and same again on a 500 mile run in one hit.

 

[LakesT6]

I’ve raised another case with VWCV and been assigned a case manager, for what it’s worth. Has anyone had any success with the motor ombudsman?

 

[Tetleycat]

Hi - Having similar issues with my T6 showing the P0401 and P20EE codes on my Carista OBD. I've just bought the van which is 2 months out of warranty, but only done 12,000 miles. I've spoken to VW who said they 'may' consider fixing under goodwill if I can show them the service history. However, I can't find the service history and it's not logged with VW - the van was previously an Avis vehicle. So my questions is, do I have a leg to stand on regarding getting the EGR fixed by VW under good will (surely 12,000 miles is not in the operating window for wear and tear), or am I wasting my time?

 

[GordonHR]

If you haven't already; ring the finance company and tell them what's happened... that should have some gravity with VW themselves.

 

[Tetleycat]

Hi - I've tried to ring, e-mail etc Avis but they just won't reply. Can't imagine that it wasn't serviced under a contract but they are not interested at all unless I want to hire a van!!!

 

[mmi]

Hi - Having similar issues with my T6 showing the P0401 and P20EE codes on my Carista OBD.

Could you please share Carista "Detailed ECU info" (under Service menu)?

 

[Tetleycat]

Could you please share Carista "Detailed ECU info" (under Service menu)?

Is this what you wanted?

Engine
Part #: 04L906056KA
Component: R4 2.0l TDI
Software version: 4047
ASAM/ODX identifier: EV_ECM20TDI03004L906056KA
Coding: 00114014432401090000 (hex)
Fault codes:
23871 Manufacturer-specific code
31103 Manufacturer-specific code

ABS
Part #: 7E0907379P
Component: ESC
Software version: 0133
ASAM/ODX identifier: EV_Brake1ESCCONTIVN75XGP2
Coding: 517E4098256384858A790276A48421E679F100 (hex)
[No fault codes]

Instrument cluster
Part #: 7E0920970S
Component: KOMBI
Software version: 1107
ASAM/ODX identifier: EV_Kombi_UDS_VDD_RM09
Coding: 450B010300 (hex)
[No fault codes]

Airbags
Part #: 7E0959655J
Component: VW10Airbag021
Software version: 0018
ASAM/ODX identifier: EV_AirbaVW10BPAVW12X
Coding: 000000000000000000000000000000003231 (hex)
[No fault codes]

Steering angle
Part #: 6R0959654
Component: LENKW.SENSOR
Software version: 0070
ASAM/ODX identifier: EV_LWSKLOVW25X
Coding: 01 (hex)
[No fault codes]

Parking/steering assist
Part #: 7E0919475T
Component: PARKHILFE 4K
Software version: 0212
ASAM/ODX identifier: EV_VW75XParkAssis4K
Coding: 108008 (hex)
[No fault codes]

Heater & air conditioning
Part #: 7E0907047AK
Component: Climatic-T5
Software version: 0708
ASAM/ODX identifier: EV_ClimaticT5
Coding: 0000000003 (hex)
[No fault codes]

Central electronics
Part #: 7E0937090C
Component: BCM PQ25 Max4
Software version: 0752
ASAM/ODX identifier: [none]
Coding: E0AC393A0A212011002009742C2B9C540F80710F60444D60330400230800 (hex)
[No fault codes]

CAN network gateway
Part #: 7E0909901
Component: GW-K-CAN TP20
Software version: 0752
ASAM/ODX identifier: [none]
Coding: 042305 (hex)
[No fault codes]

Immobilizer
Part #: 5K0953234
Component: IMMO
Software version: 1107
ASAM/ODX identifier: EV_Immo_UDS_VDD_RM09
Coding: 000000 (hex)
[No fault codes]

Adaptive cruise control
Part #: 7N0907572C
Component: ACC Bosch PQx
Software version: 0211
ASAM/ODX identifier: EV_ACCBEGVW361
Coding: 00004000FE0779 (hex)
Fault codes:
01067 Valve for disconnection 2. Heat exchanger (N317)
01058 Function - Constant Charge - Current
01059 Rotor Position Sensor (G159)
01118 Engine Pre-heating Circuit
01081 Priority Switch Valve (N185)
01072 Clutch Position - Vacuum Valve (N183)

Battery regulator
Part #: 7E0907534
Component: Batt.regelung
Software version: 0752
ASAM/ODX identifier: [none]
Coding: 030B7A73 (hex)
[No fault codes]

Infotainment system
Part #: 1K8035150L
Component: MU-E-D-ER
Software version: 7205
ASAM/ODX identifier: EV_MUEnt4CGen2LGE
Coding: 065700003C00000041111101008000001F0000C60000010001 (hex)
[No fault codes]

 

[mmi]

Is this what you wanted?

Yes, exactly, thanks.

I was curious about your van's engine software version because the recent software update should have eliminated fault P20EE (31103). That's the reason why I'm chasing P20EE faults around the Forum. So far no P20EE faults from new software....

"Fortunately" your engine still has old/original software:
---------------------------------------------------------------

Engine Part #: 04L906056KA Component: R4 2.0l TDI Software version: 4047

​

---------------------------------------------------------------
The current engine software is the following:

01 Engine​

Software number: 04L906056KA​

Software version: 6163​

More:

NOx sensor and Adblue faults codes

Hopefully mine is more helpful :D Yeah, it is to me. Mine's also a 102. I set off at the weekend from Devon around 10am where it had got down to a couple below freezing. About 60 miles into the journey (now around +5c) my engine warning light came on. This is the 3rd time it's happened in 12...

www.t6forum.com

 

[LakesT6]

Just to wrap things up with the EGR saga, it’s been flushed for the 8th time. I kicked up a fuss with VWCV customer care and got the work done free of charge. Trading the van in next week and I’ll be glad to see the back of it. I’ll be joining Team Exec shortly.

 

[lightning]

Hi - I've tried to ring, e-mail etc Avis but they just won't reply. Can't imagine that it wasn't serviced under a contract but they are not interested at all unless I want to hire a van!!!

lf there's no service history logged with VW then you may be in trouble.
However, at 12 months and 12,000 miles would it not be about ready for its first service now?

 

[Tetleycat]

lf there's no service history logged with VW then you may be in trouble.
However, at 12 months and 12,000 miles would it not be about ready for its first service now?

The on-board says the last service was 320 days ago, so, yes, it is due, but it should have had an annual service every year. VW would not take that as proof of a full service history as they said anybody can reset that. I think service intervals are yearly so I was expecting some service history. I think my only option his to get a full service at VW and hope that they are in a generous mood and fix the EGR issue.