The code is for crank shaft fluctuation signal. The ecu uses it th help notice missfire. I have seen them get damaged normaly after a timing belt has been replaced. If the bracket that holds the wiring harness does not get bolted back on, the harness will rub the alternator belt. Look for damaged wires by the timing cover near the alternator belt. Or if no harness is there at all, then there is a possability the engine has been replaced with an earlier modle.