Civic 2.2 CDTI Type S, starting issues

[gogsboy]

Wonder if anyone can help, car in question is a 2007 Civic 2.2 CDTI.

You turn the key and sometimes it will flag up 'check system'

Then it shows the Airbag and VSA lights, when you go to start it doesn't happen.

Just push the button and it turns away but wont go.

You can take out key and sometimes put back in and away it goes.

I scanned it and only code it returned was P0602 not sure if that's related

See here : http://www.helpforcars.net/obd_codes/p0602_honda.h...