Fault code P0299

andy greenwood

Senior Member
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T6 Guru
Not a good day for our van, fault code P0299 - turbocharger underboost.
Im praying it doesn't end too costly
 
I cant seem to find any information in the results that match my problem.
Last week i replaced the N75 valve and the MAF sensor( both OEM parts ).
On Thursday i drove 300 miles up to Glencoe and i never had any problems or faults. I stopped for 15 mins to take photos, i then set off to fort william and then the same fault kept coming on P0299.
The van was then up parked for 3 days , i set off this morning to come back home which was a 300 mile journey, the can ran perfect, i stopped for some diesel 10 mins from home, i was only stopped for 5 mins max and then set off again.....then it started again with P0299
Any advice please ?
 
Unfortunately not, its booked into the garage next week
Hi mate,

Did you get it resolved?

I’ve just got the same fault code. EML came on whilst on the motorway and there was an obvious lack of power.

Pulled over, gave it 30 seconds and tried again and the same fault popped up after a minute and noticeably low power again.

Managed to get home after AA advised it was ok to drive as long as I take it easy.

Also got these codes on the reader:

P068400
P066E00
P067A00
P20EE00

Luckily it’s still under warranty so gonna get it booked in asap.
 
Hi mate,

Did you get it resolved?

I’ve just got the same fault code. EML came on whilst on the motorway and there was an obvious lack of power.

Pulled over, gave it 30 seconds and tried again and the same fault popped up after a minute and noticeably low power again.

Managed to get home after AA advised it was ok to drive as long as I take it easy.

Also got these codes on the reader:

P068400
P066E00
P067A00
P20EE00

Luckily it’s still under warranty so gonna get it booked in asap.
Hi mate, yes we got it sorted. The intercooler had blown.
 
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