Well, my guess would be either a fault internal to the CKPS, or a fault in it's wiring. Though usually any issues with the CKPS it'll shut the car off to prevent severe timing issues that cause blown motors (ask me how I know)

Still only showing 1 and 4?? I'd start by checking out the wiring harness connector for the front of the engine and the ICM, since they share the same connector. Follow all your wires and see if there are any obvious signs of damage.