What's the 07e8 code BMW?

The BMW code listed at p07e8 will usually indicate that there is a failed ignition coil or a vacuum sensor. The car will usually go into limp mode and have another code such as a mIS Firing code or low pressure. The first thing You will want to do is find the other codes that are listed. If You see a low pressure code it will most likely due to a faulty igniton coil. If there is a mIS Fire code the most likely cause will be a vacuum sensor. You should take the vehicle to the dealership or an auto service mechanic to properly diagnose the issue.