Vw polo vivo 1.4 2012 model. I start my car and drive to the shop petrol lite was on.next morning crank no start

[Quintin22]

So they did do the diagnostic error that it was hiving was no feul pressure.so the replace a new pump.after all was fitted same problem but feul pressure is now all good.so next thing. They test the throttle body and clean no problem with throttel body or the petrol peddle senser.so they say it the crank shaft senser that needs to be replaced.so withe the new crank senser and petrol pump and spark is there stil no starting what can I test next and how to see where the problem is.buying and spending cash on parts that's was not the fault don't make sens to me.
And that the diagnostic code reader do pick up any error codes.i don't whant to spend money or keep on buying parts that has no problem.so where and how do I go from here and test where the problem is and tofix the problem please

[Quintin22]

So they did do the diagnostic error that it was hiving was no feul pressure.so the replace a new pump.after all was fitted same problem but feul pressure is now all good.so next thing. They test the throttle body and clean no problem with throttel body or the petrol peddle senser.so they say it the crank shaft senser that needs to be replaced.so withe the new crank senser and petrol pump and spark is there stil no starting what can I test next and how to see where the problem is.buying and spending cash on parts that's was not the fault don't make sens to me.
And that the diagnostic code reader do pick up any error codes.i don't whant to spend money or keep on buying parts that has no problem.so where and how do I go from here and test where the problem is and tofix the problem please

[Ashveer03]

Check compression & timing. Chain could have snapped.

[VAG Fan]

Your title states that the petrol light came on.
Was it just a low tank, or is the light still on? (Just wanting to cover all the bases.)