I had posted a few weeks ago that mt check engine/dsc/abs/brake lights are all on after i got my rear ened pratically all changed, because some drunken mexican decided to slam into my bimmer. SO mt friend has a obd2 and checked my codes one is wheel speed senosr malfunction? does this mean i need a new one if so witch one? or does it just mean its not plugged in right or what? the othet code is 1749 witch i cant on the code book any ideas?