Crankshaft sensor

The mistake is diagnostic fault codes never say to replace parts or that one is bad. They only indicate the circuit or system that needs further diagnosis. First you must rule out grounded and cut wires, stretched and corroded connector terminals, corroded splices, and mechanical problems related to that circuit before suspecting a part that is referenced in the code. In this case you likely have an intermittent wiring problem that was not acting up after the sensor was replaced.