Pixhawk 6C I/O Failure

Hi, I have been trying to set up my Pixhawk 6C for several days now and I’m running into issues with the I/O. The orange B/E light is always on and whenever I run px4io start it gives an error stating “unable to communicate with IO.” I have tried reflashing the firmware and updating both the bootloader and px4io but nothing seems to work. Any help to fix this issue would be appreciated, thanks.