I just had the problem. CIU went bonkers, but car still drove. Fisker/Lamborghini Palm Beach pulled out the unit and dried it out. Now works fine.
Leak under the windshield wiper in the hood cowling. Silicone sealed it.
Everybody should do this, as it is not an uncommon problem.
owner of Fisker Karma 2012 Eco-Sport Earth color
GMC 100 Pick up truck 1954
Range Rover Sport 2014