I don't have an inkbird controller, but on my electric controller for my mash/boil kettle, I get an error code with similar indications (Oral something), when it is not connected to a functioning temperature probe. That means I haven't connected it correctly (or it is disconnected) or the probe or electric line connected to the probe has malfunctioned. I have re-soldered at my connection plug on the connection line a couple times to fix it. I am a bit ham handed and need to be more careful not to twist the line or connection, as it can easily break. I keep extra connection lines on hand for just such an instance. Perhaps you can obtain the connection line and probe set up for a back up....
Good luck and Cheers.