What to do when you get a fault code 0730 on a 2007 Mercedes S65? This problem started after i had my oil pan gaskets replaced.
P0730 is a generic transmission code. Typically paints to a bad valve body or conductor plate. It can be various things really. That's why you either need to find a mechanic that has a Mercedes scanner or get a good scanner that can read MB specific codes.
Make sure the wire harness going to the transmission isn't loose.