strange indeed, I had P1205 with the fuel gauge going wild. I unplugged cylinder 5 injector electrical connector and plugged it back in and has been fine ever since, but then again mine is the 2.4 5 cylinder.
Have you tried to clear the error and see if the error comes back on ? might have to replug all the injector connectors if the error does return to see if that does not clear it. Otherwise I am out of ideas on this one.
Without hart we would be mere machines as Alfa says. So I reckon this is one off like this. I need to mention that I had misfire when I drove. Error cleared and I will be checking again. also a week ago I changed alternator myself and maybe I did something clumsy