Hi guys had to call out RAC this afternoon due to the car not starting it cranked over but won't fire and got white smoke from engine and exhaust

Got it going in the end with a can of easy start.
While he was there got him to read the ecu and came up with the following error codes

P0530
P0404
P0235
P0236

If anyone could shed some light on these codes/ possible causes/ fixing the problems would be great as new to the derv world bin a petrol head for last 8 years.

This is the best I can come up with, hope it helps.

P0530 - A/C Pressure .......... Get the Air Con checked

P0404 - EGR Range/Performance Error .......... EGR solenoid faulty, EGR needs replacing.

P0235 - Supercharger Pressure Invalid Signal ......... Remove and clean MAP sensor(might need replacing). Check induction pipwork for leaks.

P0236 - Over Boost Valve Error ........ Check correct operation using FES. Check the small vacuum pipes(might need replacing).

1) a/c pressure high
2) egr valve (clean it)
3) turbo boost sensor valve short circuit
4) map sensor (manifold absolute pressure sensor) located on inlet manifold