P0727 Land-rover - starts up then putts out

Question

Usually starts fine and doesn't die out, but everyone once and a while usually in the morning it starts and dies out like it would if u have a bad alternator but it doesn't 100%. Has new alternator and brand new battery , code comes up for crankshaft sensor, what are the parts needed to fix my problem

Answer 1

P0727 Engine speed presence  of rising or falling edges

This would be the CKP sensor , P0727 is the result of a failing CKP sensor.