N55 p112E rough idle 101F01

[Romanmccollom]

long story short, I bought a 2011 535i x drive that had a rough idle, misfire codes, and timing codes. It ran awful. Put new vanos solenoids, vanos gears, retimed it, all codes went away except I had a p112e code come up that wasn’t there before. Could not clear it, it was a permanent code. Car ran a lot better but still had a pretty rough idle, found oil in the vacuum res on the valve cover so I bought a good used one on eBay, installed it and still had same code and suction under oil cap. So I bought a ccv valve and installed it. No change. So I bought an after market valve cover brand new with a new gasket and now it runs better but still has a vibration at idle, it still throws code p112e occasionally maybe once a week. And when I pull the oil cap off there is suction and my fuel trims immediately go lean. Any ideas? Could the new valve cover be bad out of the box? I also tried smoke testing, didn’t see any leaks
I’m at a loss car is drivable but vibrates at idle and occasionally I get the drivetrain malfunction message and sometimes the code

[Iso]

long story short, I bought a 2011 535i x drive that had a rough idle, misfire codes, and timing codes. It ran awful. Put new vanos solenoids, vanos gears, retimed it, all codes went away except I had a p112e code come up that wasn’t there before. Could not clear it, it was a permanent code. Car ran a lot better but still had a pretty rough idle, found oil in the vacuum res on the valve cover so I bought a good used one on eBay, installed it and still had same code and suction under oil cap. So I bought a ccv valve and installed it. No change. So I bought an after market valve cover brand new with a new gasket and now it runs better but still has a vibration at idle, it still throws code p112e occasionally maybe once a week. And when I pull the oil cap off there is suction and my fuel trims immediately go lean. Any ideas? Could the new valve cover be bad out of the box? I also tried smoke testing, didn’t see any leaks
I’m at a loss car is drivable but vibrates at idle and occasionally I get the drivetrain malfunction message and sometimes the code

Hi did you finally found a fix?