Hi.
Could well be filter separation, also could be the pump fuse or relay.
Try and get an assistant, get him to switch on the ignition while you listen at the filler cap, you should hear the pump for a few seconds, if it runs at least you can discount the pump, relay and fuse, making the filter problem most likely.
Cam sensors can fail but usually not in the way you describe. Can you check the error codes?
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Cheers from Trevor
MM0KJJ
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