This code abs 136 no eng is coming up on my 2004 columbia. I checked altenator, fuses, wiring, charged batteries, 4 post inside fuse box (all show voltage with key in on position). What am i missing. ABS 136, will that prevent engine from cranking. It does turn over at a good rpm. Could it be a sensor? If so, which one and where is it? How do i check it?