Kris G

Hey everyone, I have a automatic transmission 2005 Subaru Impreza Outback sport that I just got and it has a few issues. I can't tell if they are linked or not, I am not really a car guy myself, or if they are all different things that just need to be repaired. My cruise control light is blinking with my check engine light. I went to autozone to run my codes and the only one that came up is the P0420 which is related to my cat which surprised me a figured that the cruise control or something from the engine would've come up. I do think one of my stablizer bars/axles are unstable becuase my steering wheel is kinda shaking abnormally and my power steering is weird which could be the check engine, but nothing comes in line with the cruise control disabled. Does anyone have any thoughts or fixes, im in the dark myself, anything helps. Thanks.