There are so many modules you can damage by F-ing with the battery when it is running...modules that have 4 digits in their price tags.

I appreciate the DIYer spirit. Kudos. Kudos for recognizing the codes were all spurious....But this is not a 1970 VW bug that you can take the battery out, lean a shoulder into it on a flat parking lot, get it up to 3mph, pop the clutch and drive 100 miles home!