My guts are saying.Get someone to set the ignition timing, valve timing and then reset the Basic Settings on a VAS 1551 or 5051 or 5052. (01 (engine)-04(basic settings)-000(Value) IIRC)

Could be the coil, but Id be surprised. They tend to fail completley. No spark so no run. Possibly the ECU...

Ignore the Hall Sender fault. That only occurs if you check the fault memory when the engines not running.