[s-cars] pulled 5 codes with scan tool, help diagnosing them

[forrest bradshaw]

used a scan tool at shop yesterday and came up with 5 codes:

this code 4 times:

00255
unknown component

this code once:
00561
mixture adjustment 
adaption limit
(add) not reached

what do these mean?
could blowing a hose and having the car die throw a code, its happened about 4 times. could driving with MAF dissconnected throw code? could my O2 sensor splice work be bad?

		
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