Just to make this more exciting, a bad module can generate a lot of codes that point in other directions (like bad wheel speed sensors) when it is really the module. Mine tricked me into replacing two wheel speed sensors before I wised up... There are whole threads here dedicated to trying to sort out the module or something else, depending on the codes you get.

__________________
David.X5
2001 X5 4.4i Sport
SOLD! at 160k miles