2012 Toyota Corolla. P219A code. What is is ?

Question

The car has 23,000 miles on it. The check engine light has never been on before. I stopped the car to get gas. When I cranked it back up, the check engine light was on, and the Trac control light was on too. When I press the Trac Control button, nothing happens - the light stays on.

I pulled the engine codes, and got a P219A (which said drivetrain).

Anyone know what might be going on? I can't even find specifically what the P219A code is.

Thanks,

Micallen