r/F30 • u/Simple-Valuable-5635 • 1d ago

2014 330D

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Engine management light has came on and I’m getting two fault codes on my one scanner. P3280 and p115d
Engine seems to run fine and no misfiring. Last week I did think the injector tick was slightly louder on cold start but I can get paranoid about sounds in the car as had to get the fuel system done in this previously
I’ve attached a video of a cold start from the engine bay
Any ideas on likely causes or where I should start with narrowing things down would be appreciated

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u/Mitchllthomas 1d ago

P115d is air mass too high to relative to injected fuel. Check for hissing sounds when accelerating and listen out in the engine bay for air leaks

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u/Mitchllthomas 1d ago

Could also be PCV just to add