2000 Honda Accord Had a rough start.

I went to the store and came back and tried to start my car and failed three times. I have recently replaced my transmission (2000 accord transmission are known to be faulty). I used my code reader to check and came up with a 1399 and a 1738. I was wondering what could be wrong with it. I can't really afford another big repair after spending 2k on the transmission and engine mounts. I checked the engine bay and wires for any loose wires and pushed any that I saw. The car started after I left the key in and turned it slowly.