trafic won't start

hey guys i have a 2006 renault trafic van they won’t start !!!!

it was running fine then I went to start it up one morning and it wouldn’t start.



I noticed that the hand pump had no pressure so primed the hand primer up but still no start. I sprayed some brake cleaner down the air box and it fired up on the brake cleaner but not for long.

I replaced the fuel filter thinking this would fix it but it didn’t !!!

I then noticed that the fuel pressure regulator was buzzing.

so had a scan tool and it came up with a few codes



1806 Airflow Sensor Circuit



1809 Fuel pressure Sensor Circuit



1805 Fuel Temperature sensor circuit



1822 Fuel Pressure solenoid Valve Circuit



I brought a brand new fuel pressure regulator bolted it in and still the same buzzing noise and van still wont start



Any ideas and where to look next ?