MX-5 Problems

Hi all,

The wife ha a Mazda MX-5 2003 1.8 Petrol.

It has been running fine until today.
The engine starts and there is squeeling from engine bay, bang from exhaust then the engine dies.

Start it again and it runs really rough then dies.

Start it again, it runs rough, then settles down. touch the accelerator and the revs rise then the engine dies.

Battery light flashing on for a few seconds then off.
ABS Light on
Airbag light on then off again

I have scanned the obd and have 3 codes.

1. P0010. A Camshaft position actuator circuit/open bank 1

2. P0328 Knock Sensor 1 Circuit high bank 1 or single sensor

3. P0335 Crankshaft Position Sensor A Circuit

Anyone shed any light on what would cause these sensors to show failure?

Thanks

Paul