Question about 2005 Audi A4
Brake boost vacuum system
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: the system detected a leak
Replace the gas cap and clear the fault code, most times this clears the issue with code P0455. If it does'nt then you will have to have test equipment hooked up by the dealer to find the leak.
Posted on Jul 28, 2008
SOURCE: turbo over boost on audi
I can help you to fix this problem. "Fault code: P1557 - Turbo Boost pressure control exceeded"
But I need some info from your engine:
- what type of engine do you have (engine code: ex.ALH, AJM, AWX, ...) or power in kW (PS)
- how many km (miles) are your car?
My e-mail adress is: TDISLine@yahoo.com
Posted on Nov 14, 2008
It's possible that the diverter valve (DV) has failed. The OEM valve has a plastic diaphragm inside and it can crack. If this happens, the car will leak boost air and will lose power as a result. Go to www.audiworld.com, click on Resources, then Tech, and then go to the engine article about replacing/upgrading the diverter valve - it'll show you where it is and how to do it.
Posted on Mar 27, 2009
Inside the boot is a plastic cap embeded in the boot liner. Remove the cap to reveal a screw. Undo the screw and the whole rear light cluster will come away in a sideways and not rearward direction to reveal all of the bulbs. Hope this helps.
Posted on Jul 11, 2009
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