Hi@all,

I Need some help with a Porsche Cayenne S V8, 2006.

I pulled following DTC's:

P0441 - EVAP incorrect purge flow
P0300 - Random misfire
P2189 - System too lean at idle (Bank2)
There is a shaking engine at idle and under load, sometimes the engine makes misfires too on random cylinders.


Can it be the tank vent valve for all this prolems or is there any other Problem too? can somebody Support me?

BR Matthias