Those are transmission codes.
You might be low on transmission fluid as I had this happen when I didn't fill mine on a proper level surface. Once I rechecked fluid level and filled it didn't happen anymore and that was a year+ ago.

I would get the transmission fluid changed. You don't have to drop the pan, just drain the old fluid and fill it with ZF lifeguard 6 fluid. It requires ista-d/rheingold or a scanner that can read transmission temperature, to ensure you fill it to proper level.