If you are not getting any codes then it could be the camshaft or crankshaft sensor. Run engine till it warms up itshuts off . Let it cool off and see if it runs till warm and shuts off. If this happens could be above sensor. Can you hear fuel pump when you turn key should run for 5 seconds then shut off. When engine stops you should still be able to hear the fuel pump for 5 seconds when key is turned off then on. Mine was the camshaft sensor. Good luck