How can I get OBD codes in a car that won't start and has had the battery disconnected?

2007 AUDI 100
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WANTING
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I have been working on a vehicle that had a check engine light, but will no longer start at all, during the process of trying to fix it I disconnected the battery, which reset the OBD codes. When I scan the computer it says no codes, I know there are codes, but I don't know if I can get them back without actually driving the vehicle and it currently won't start.
May 7, 2012 at 1:34 AM
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FIXITMR
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no codes till you drive. do you have spark and fuel pressure and injector pulse?
May 7, 2012 at 1:53 AM
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