Continual errors despite EGR, TCV and MAF being replaced. 102 CAAB engine T6/T28

[bikers1]

Recently had my EGR replaced, van was running great.

a day later I got P0101 (MAF) and PO299 (Underboost) on my simple Ancel VAG reader.

Replaced the MAF and TCV with Peirburg ones.

10 mins driving and the glowplug/coil light was flashing ... again .... but it would still rev okay, no 'apparent loss in power.

I cleared the codes, coil light came back on, switch off and on and it took an hour for the EML to appear.

Same 101, 299 errors

I've checked the vaccuum hoses with a gauge, all the pipes for leaks and all the eletrical connections

I checked the actuator on the turbo and it is free moving with apporpriate resistance from the diaphragm.

I'm new to such fangled electronics in cars, prior to this I had an L200 K74, shoguns, land rovers, nice and simple ;-)

The van 'seems' to be running and performing fine ....

Am I missing something ? my question for those who have more experience of these fangled bloody things, do I need to clear this with a VCDS, do a wild fandango ? , sacrifice a goat ?


@mmi mentioned on another thread that there are software updates for T6's , mine is a 2016, is it possible that might be an issue ?

 

[Loz]

What about a break in the loom where the wires enter the plugs? might be the common for the 2 sensors?

have a read of this (different sensors but worth a read) CEL and radiator fans running constantly

 

[bikers1]

What about a break in the loom where the wires enter the plugs? might be the common for the 2 sensors?

have a read of this (different sensors but worth a read) CEL and radiator fans running constantly

Thanks, I'll check the wires out ;-)

 

[mmi]

@mmi mentioned on another thread that there are software updates for T6's , mine is a 2016, is it possible that might be an issue ?

No, not related.

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EGR valve CAAB 102 T28 , issues, additional codes and loss of power.

Unsurprisingly I have EGR issues on my 2016 T28 102 CAAB It's thrown a couple of P0401 (EGR insufficient flow) in the past month. I cleared them with a view to cleaning or replacing the EGR valve/cooler. Van was running fine. However, yesterday I got P0101 (MAF) and PO299 (Underboost) and the...

www.t6forum.com

For CAAB engine - have you checked this:

EML mass air flow fault 04795 [Resolved]

Hello all my engine management light came on I plugged Cristia in and come up with fault mass air flow so changed to new pattern part one to see if issue drove all about 40 miles and back on any help idea please

www.t6forum.com

 

[bikers1]

No, not related.

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EGR valve CAAB 102 T28 , issues, additional codes and loss of power.

Unsurprisingly I have EGR issues on my 2016 T28 102 CAAB It's thrown a couple of P0401 (EGR insufficient flow) in the past month. I cleared them with a view to cleaning or replacing the EGR valve/cooler. Van was running fine. However, yesterday I got P0101 (MAF) and PO299 (Underboost) and the...

www.t6forum.com

For CAAB engine - have you checked this:

EML mass air flow fault 04795 [Resolved]

Hello all my engine management light came on I plugged Cristia in and come up with fault mass air flow so changed to new pattern part one to see if issue drove all about 40 miles and back on any help idea please

www.t6forum.com

Thanks

 

[bikers1]

So .... just for completeness, so that this thread has a conclusion, should anyone find it in the future,

after saying f*ck it and driving 150 miles the van finally lost nearly all power on some very steep hills in N'umberland ...

shouted the AA, after giving him the run down to date he said "I know what it'll be" almost immediately, no real surprise when we checked the state of the intercooler

I pulled the front off, whilst he drove to Sunderland to pick up a new one, fitted in 15 minutes and all is good

 

[dubLU]

I like the pic of you praying to the van gods.

So why was your cooler broken?

 

[bikers1]

I like the pic of you praying to the van gods.

So why was your cooler broken?

lol, That's my pal Jane rolling a roll up ..... she only has one arm so has to kneel down to do it


As for why ? , ask Mr Volkswagen why thier intercoolers only last 81k miles ;-) , talking to a fella on FB who's cooler went at 50k miles

 

[dubLU]

My mistake, I'm fixated on the van gods, i spend a lot of time thanking them for my 9 months of trouble free t6 ownership.
So did the AA install it free of charge? Seems hell of a big job for an AA call out.

 

[Pauly]

Replaced mine at 82k so beat you by a thousand