Consistent as in every cycle? If so, try to disconnect coils, one by one,The problem I am trying to fix is a consistent misfire that is particularly noticeable at idle when cold, but is present in all conditions.
until you it gives not change. When you then have found the cylinder,
swap coils with another cylinder to find out if it is the coil or spark plug.
I think, that the code you are given, could just be a consequence of the misfire?