BiTDi failure [Resolved]

[Crazymind]

Forever doesn’t go along with anything turbo diesel built after Euro 6. And engines are not anymore built to last but built to pass emission tests.

 

[Dev]

Hi all, my 2018 DSG bi turbos low boost turbo has failed at just 31,000 miles!
The van has been well serviced with regular oil changes.
The engine management light came on and my local garage said it was probably just a sensor that was faulty so I carried on driving the van for a week while I was waiting for it to go in for inspection.
Driving on the motorway the van went into limp mode.
My garage said the DPF was blocked and they wouldn’t do any more work on it until I had the DPF cleaned so I took it to a DPF cleaning specialist garage and had it cleaned.
The van was still in limp mode after the DPF clean.
I took the van back to my local garage and they inspected it further and have said the low turbo isn’t producing boost but the main turbo is ok.
Is it possible to replace just the low turbo or do I have to replace the entire turbo?
Should I buy a new one or is it safe to buy a reconditioned one as I don’t have £3,000 for a new one!!
Even though most of my driving is around town surely a turbo shouldn’t fail at such low mileage?
Any advice would be greatly appreciated.
Dev

Well it turned out that my low boost propeller shaft had snapped in half and luckily none of the propellers fins had broken off and entered my engine.
A great mechanic called Serge who owns VAS Technical in Ashtead near Leatherhead, a VAG specialist took my engine apart.
He had to remove a lot of my engine to get the the turbo.
Serge said the high boost turbo was fine and so replaced the parts on the low boost and put it all back together.
All worked well, and much cheaper than a VW main dealer but then the light engine warning light came on again and this time the EGR valve had failed which was another 5.5 hours labour and £600 for the EGR valve.
Finally back on the road and all is good still

 

[Dellmassive]

Well it turned out that my low boost propeller shaft had snapped in half and luckily none of the propellers fins had broken off and entered my engine.
A great mechanic called Serge who owns VAS Technical in Ashtead near Leatherhead, a VAG specialist took my engine apart.
He had to remove a lot of my engine to get the the turbo.
Serge said the high boost turbo was fine and so replaced the parts on the low boost and put it all back together.
All worked well, and much cheaper than a VW main dealer but then the light engine warning light came on again and this time the EGR valve had failed which was another 5.5 hours labour and £600 for the EGR valve.
Finally back on the road and all is good still

great result. . . keep us posted for any further works or issues.

 

[DXX]

Well it turned out that my low boost propeller shaft had snapped in half and luckily none of the propellers fins had broken off and entered my engine.
A great mechanic called Serge who owns VAS Technical in Ashtead near Leatherhead, a VAG specialist took my engine apart.
He had to remove a lot of my engine to get the the turbo.
Serge said the high boost turbo was fine and so replaced the parts on the low boost and put it all back together.
All worked well, and much cheaper than a VW main dealer but then the light engine warning light came on again and this time the EGR valve had failed which was another 5.5 hours labour and £600 for the EGR valve.
Finally back on the road and all is good still

Are you sure the failed turbocharger didn’t dump oil into the DPF?
What was the state of the DPF prior to the turbocharger failure? It’s becoming apparent that a clogged DPF (constant unsuccessful re-gen’s) is creating back pressure and causing turbocharger failure on the CXEB 204PS BiTurbo.

 

[Dev]

Are you sure the failed turbocharger didn’t dump oil into the DPF?
What was the state of the DPF prior to the turbocharger failure? It’s becoming apparent that a clogged DPF (constant unsuccessful re-gen’s) is creating back pressure and causing turbocharger failure on the CXEB 204PS BiTurbo.

When I had the DPF cleaned by a specialist he showed me the reading and it wasn’t that bad. It could well have been the cause of it though.
My DPF light came on briefly then went off again so I was none the wiser.
The van gets driven down the motorway but probably not enough.
Why wouldn’t the DPF light stay on if it’s getting more blocked?
It’s a load of bollocks if you ask me for a £50,000 van with very low mileage and an oil change yearly with fully synthetic oil.

 

[huw169]

Resurrecting old post!
Just encountered this myself. Turbo 1 (small) is dead.

Currently considering new from VW (TPS), and exchange unit, or a refurb. About to start researching.
Gutted!

 

[Dellmassive]

Cxeb engine?

Thread '- 204ps Bi-Turbo CXEB T6 Engine & Turbo problems -'

17 Aug 2024

- 204ps Bi-Turbo CXEB T6 Engine & Turbo problems -

Looks like im the latest patient of the CEXB engine issues.

(possibly the 2016-2018 range as there is a mention that the CXEB Block etc was revised in 2019)

(the CXEC 199ps Bi-Turbo was released 2019> and revised )

in sort it looks like its either Turbo or Engine failure.

here is some background:

******************************************************************
204ps Bi-Turbo CXEB Engine & Turbo problems...

• Dellmassive
• cxeb engine
• Replies: 494
• Forum: Engine, Gearbox, Exhaust, Drivetrain

• 
• 

.

 

[Dellmassive]

I've got a good cxeb turbo for sale if you're interested.

Bolt on and go.

For Sale Thread 'VW T6 Bitdi turbocharger CXEB 2018 - 03N145703M'

1 Feb 2025

VW T6 Bitdi turbocharger CXEB 2018 - 03N145703M

OEM unit removed form a working van, Turbo tested fine,

full working order, from a 2018 T6 Sportline with 79500miles on it.

ready to go . . .



removed by VW Chelmsford during a warranty engine replacement.

i purchased a new Turbo @ £3.5k for them to fit with the new engine.

so this one is ready for a new home. . . .

+++

£1500 collected or plus shipping

+++







.....

• Dellmassive
• 03n145703 03n145703m
• Replies: 3
• Forum: For Sale/Wanted Threads

• 

.

 

[huw169]

Thanks @Dellmassive , but mines a CXEC and anything i spend this sort of money on will need a decent warranty.
I’m just at the start of my research as well so not in a position to commit to anything right now.
Thanks though.

 

[Dellmassive]

gotcha. . . CXEC i think has the same turbo. ( but revised block etc)

not seen many CXEC vans with Turbo problems? - was the van regualrly serviced with correct oils and filters etc?

+++


T6: EU6 - With adblue (2016 to 2019)
2.0 TDI CR - CXGA 85ps
2.0 TDI CR - CXGB 102ps
2.0 TDI CR - CXHB 114ps
2.0 TDI CR - CXGC 114ps
2.0 TDI CR - CXFA 150ps
2.0 TDI CR - CXHA 150ps
2.0 BiTDI CR - CXEC 199ps from 2019>
2.0 BiTDI CR - CXEB 204ps upto >2019 (Engine block issues)(BiTurbo issues)(keep a close eye on oil use, if its eating oil then have the turbo and cylinder compression looked at)( if it needs a turbo or new engine - the CAT,DPF,Oxygen sensor all need to replaced as well)

2.0 Petrol TSI - CJKA 204ps
2.0 Petrol TSI - CJKB 150ps

Petrol's have a CAT, but No DPF or EGR
+++

Thread 'VW Transporter Engine codes (T5-T6.1)'

10 Oct 2024

VW Transporter Engine codes (T5-T6.1)


do we have a definitive list of engine codes?

if not then lets get one sorted out.

ill start the list, . . .

and in info below and ill update the main list.

• Dellmassive
• caac engine cxhb engine dmza engine dnaa engine dnab engine dnac engine
• Replies: 11
• Forum: Engine, Gearbox, Exhaust, Drivetrain

 

[huw169]

Yes. Serviced more frequently with correct oils. Not hammered or abused, but i only got it at 13k miles. Now on 45k.

Had a flat battery after sitting for 3 weeks after we got back from 1500 mile trip to the alpes. Jumped it, and ran it about for a bit. Then next day engine coil light and limp mode.
Got turbo and egr faults. Had it diagnosed today and egr mapped out just to see if the turbo fault kept re occurring.
No other faults or issues at all.

 

[JHolloway46]

Hi all, my 2018 DSG bi turbos low boost turbo has failed at just 31,000 miles!
The van has been well serviced with regular oil changes.
The engine management light came on and my local garage said it was probably just a sensor that was faulty so I carried on driving the van for a week while I was waiting for it to go in for inspection.
Driving on the motorway the van went into limp mode.
My garage said the DPF was blocked and they wouldn’t do any more work on it until I had the DPF cleaned so I took it to a DPF cleaning specialist garage and had it cleaned.
The van was still in limp mode after the DPF clean.
I took the van back to my local garage and they inspected it further and have said the low turbo isn’t producing boost but the main turbo is ok.
Is it possible to replace just the low turbo or do I have to replace the entire turbo?
Should I buy a new one or is it safe to buy a reconditioned one as I don’t have £3,000 for a new one!!
Even though most of my driving is around town surely a turbo shouldn’t fail at such low mileage?
Any advice would be greatly appreciated.
Dev

I feel you mate. My turbo has just gone as well. 2017 with only 35k on the clock. Already the EGR fail and not to mention the dreaded coolant issue, which ended up being the head casket. Only had the van 4.5 years and it’s cost me nearly £10k in parts and labour. I love the van, but it is hands down the worst motor I have ever owned. I want to sell, but keep thinking nothing else can possibly go wrong!

 

[Dellmassive]

I feel you mate. My turbo has just gone as well. 2017 with only 35k on the clock. Already the EGR fail and not to mention the dreaded coolant issue, which ended up being the head casket. Only had the van 4.5 years and it’s cost me nearly £10k in parts and labour. I love the van, but it is hands down the worst motor I have ever owned. I want to sell, but keep thinking nothing else can possibly go wrong!

35k on a 2017 plate?

4375 miles per year.... That's the problem, it's not getting, driven often enough.

It's running bone dry and corroding up.

Turbos running dry,
Head gasket rusting.
EGR corroding.

 

[JHolloway46]

35k on a 2017 plate?

4375 miles per year.... That's the problem, it's not getting, driven often enough.

It's running bone dry and corroding up.

Turbos running dry,
Head gasket rusting.
EGR corroding.

You are probably correct and similar to what the garage has said. Just frustrating as I have had other vehicles and done similar low mileage and not any problems.

 

[DXX]

The engine management light came on and my local garage said it was probably just a sensor that was faulty so I carried on driving the van for a week while I was waiting for it to go in for inspection.

“Iceberg on the starboard bow”, are you sure? I’ll just speed up and head towards it to get a better look.

Where the f@*k do these garages recruit their mechanics!