CEL Codes(What do they mean?)

I've had my CEL on for about a week now and I just got into Autozone tonight to have it checked out. First we tried the OBD II, but it kept getting an error message saying it couldn't connect. So we messed with that for like 10 minutes trying to get it to work. Then we ended up doing the "CEL flash codes". Then these codes weren't in there books so I had to go to 2gnt.com to find them.
This is what we got:
12-
direct power input to the PCM(Powertrain Control Module) has been disconnected within the last 50 key-on cycles
72-
I looked it up and there isn't one on there. I went out to my car again checked to make sure I had counted right and was still 72. What could it stand for?

So if someone could elaborate on what the #12 code means and if #72 is a real code or not I would appreciate it. Also will either damage my car?
Thanks

I can't seem to find anything for code #12 but code #72 is coming up as: RIGHT BANK CATALYST EFFICIENCY FAILURE. I can post more information on code #72 if needed.

BTW code 72 can also show as code P0432 depending on scan toll used. I guess they were retrieving the MIL code's

Yeah the scan tool wouldn't work for some reason couldn't connect.

If you could post more on #72 that'd be great. What it is how, it affects my car, or if I can ignore it.

1. Repair all oxygen sensor trouble codes first. If any oxygen sensor trouble codes are set, go to DTC TEST and perform appropriate test. If no oxygen sensor trouble codes are set, goto next step

2. If any TSB's apply to vehicle, perform appropriate repair. Perform TEST VER-5A. If no TSB's apply yo vehicle, goto next step

3.CATALYTIC CONVERTER EFFICIENCY FAILURE DTC sets when converter loses the ability to store oxygen, efficiency drops, and concentration of oxygen becomes the same downstream as upstream. If output voltage of downstream O2S copies output voltage of upstream O2S with time lag (seen by PCM) between switching O2S's. The malfuntion indicator light (MIL) will illuminates after 2 trips and remains on. MIL will go out if conditions that set the trouble code are not found on subsequent trips. Possible causes are: Catalytic converter failure, Exhaust leaks upstream of catalyst, Contaminated fuel, Mechanical engine problem.

4. Check exhaust system for leaks between engine and downstream O2S. If any exhaust leaks are present, repair as neccessary. Perform TEST VER-5A. If exhaust leaks are not present, goto next step

5. Check exhaust for excessive oil consumption. If high oil consumption is not present, goto next step. If high oil consumption is present, repair engine mechanical failure as necessary and replace catalytic converter. Perform TEST VER-5A

6. A newly installed downstream O2S along with and existing(aging) upstream O2S may cause this trouble code to set. If right downstream O2S has been replaced within the last 5000miles, goto next step. If right downstream O2S has not been replaced within the last 5000miles, replace catalytic converter. Perform TEST VER-5A

7. If upstream O2S has been replaced within the last 5000miles, replace catalytic converter. Perform TEST VER-5A. If upstream O2S has not been replaced within the last 5000miles, replace O2S, perform TEST VER-5A.

Thanks, I'll have to check out that stuff this weekend hopefully.