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Vw Golf 1.4 BMY TSI 2006 - Loss of boost and misfire #

Posted by Paul Chard on October 29, 2010, 10:28 am

Year of Manufacture *: 2006
Engine Size and Code *: 1.4 BMY

I have a 56 plate golf tsi, with boost issues it has 3 codes stored:

.008801 Boost pressure control valve mechanical malfunction

.004269 magnetic cluch for supercharger open circuit

.008802 turbo/supercharger boost pressure not detcted mechanical

i was wondering if anyone has come across this before, any help advice would be good. i am going to check the wastegate arm and see if that is free had problems with these before but not seen the second code before!!!!

Cheers Paul

Re: Vw Golf TSI loss of boost and missfire

Posted by Matt Booth <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=ukat3028' width='330' height='300' border=0 style='border:none;'> on October 29, 2010, 7:46 pm, in reply to "Vw Golf TSI loss of boost and missfire"
Matthew Booth

The first code shows a mechanical malfunction with the diverter valve (N249). It's electrical on these so I would remove and inspect and if possible perform component activation on it to check movement.

Regarding the second code I would check fuse 20 in the engine bay and then the wiring to the SC clutch.

The third code is probably a result of the second as the supercharger will not work without the clutch engaging, hence the lack of boost detected.

Matt

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