the code for your maf is either the wire going to the maf or the maf itself failing. i would try replacing it if your SEL light is still on.
sounds like you have more then one problem here as well. there could be a transmission issue on top of the maf failing. have you checked the fluid color? as well an option to check the transmission would be to drop the pan and check for metal filings. it's fairly inexpensive to have it done at a repair shop. including a new trans filter you would be looking at somewhere from 100-150 bucks.
hope this helps
