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hi,
i had the same issue before I rebuild the engine and I've changed everything ( vacuum lines, pcv,ccv system the hoses over the valve cover and the ones under the valve cover, 4 new Vanos solenoids, 8 brand new injectors, 2 air mass sensors, 2 intercooler sensors, 2 intake manifold sensors, and I checked the 2 intake manifolds for any leaks while the engine was out and there was no leaks at all, but i found out something weird, when I unplug the fuel tank ventilation valve located on bank 2 the engine works with no issue and the code doesn't get back until I plug it again. and I still don't know the issue..
please help..
i have a 650i GC 2013 with n63b4401 engine.
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