Crank no start

[Blanko805]

OK SO I HAVE A 2010 LEXUS IS 250 AND FOR SOME REASON. OUT OF THE BLUE MY VEHICLE WOULD. ONLY CRANK BUT NOT START , I HAD A MOBILE MECHANIC COME TAKE A LOOK AT IT AND HE. TOLD ME THE FUEL PUMP. AND THE FUEL PRESSURE SENSOR. NEEDED TO BE. REPLACED SO I ORDERED THE NEW PUMP ND. Fuel pressure sensor ....so I SWITCHED OUT THE OLD ONES FOR THE NEW ONES. AND went. Over to. Try and. Turn her over but yet. Still all I get is a crank no start ........ I've CHECKED ALL THE FUSES IVE. CHECKED THE RELAYS, I PLUGGED IN MY SCAN TOOL simply because of the fact that there is a check engine light that is on. But every time I run my scann tool all it says. Is. No codes present ......IDK WHATELSS 2 do somebody. Pls. Help help help pls