When is the latest dump? If the system is already dumped we cannot fix it by reloading LIM 1. This will be your steps.
We will just cross our fingers if the unit code is okay.
1.DUPUI:LIM=1,UNIT=FIP;Y;
2.DUPUI:LIM=1,UNIT=IOH;Y;
3.FCPLI:UNIT=FIP;Y;
4.FCPLI:UNIT=IOH;Y;
5.FCPCI;Y;
Then try IOCAP. If not SFCEI again and let us know.