Air-conditioning blows cold sometimes

First, it'd be helpful to share that you have a Sonata Hybrid. The hybrid model is the only one that can set B2467, because it pertains to compressor operation being in "Wait mode" which is a result of communication breakdown between the compressor and the controls for the air conditioning system. This can be due to wiring concerns, a blown fuse, low 12 volt engine battery voltage, cooling fan operation (engine cooling fan), and proper operation of the active air flap. I would strongly recommend having an experienced tech have a look at your concern to see what is happening; use of a Hyundai GDS diagnostic tool is exceptionally helpful.