vauxhall astra cdti 150 - engine light on after changing alternator - bodace5

Hi all. Just changed alternator and now engine lights on. Done accelerator and foot brake press and im getting the following codes on dash;

10008

10021

62102

38008

Any ideas people?

vauxhall astra cdti 150 - engine light on after changing alternator - Collos25

Are you sure you have not dropped a wire when you reconnected the loom.