can someone give me some advise to what these codes mean and what needs to be replace with these codes?
i have a 2001 golf 2.0


the check engine came on and i pull the codes and here they are
1. P0606 ecm/pcm processor
2. P0261 cylinder 1 injector circuit low
3. P0267 cylinder 3 injector circuit low
4. P0270 cylinder 4 injector circuit low
5. P0264 cylinder 2 injector circuit low
6. P0445 evaporative emmission system purge control valve circuit shorted
7. P0418 secondary air injection system relay A control cirsuit


note: i just replace the alternator about 2 weeks ago. at that time the check engine was not on.

any help is appreciated.

thanks !