Moelafify

I have a 2008 Magic Scepter 28’. It has a 525efi S/N:OM959932. I have codes: EST1 Open Circuit, EST2 Open Circuit, EST3 Open Circuit, and EST4 Open Circuit. Engine won’t start at all, and verified no spark by removing cylinder #8 spark plug. I’m confused because shouldn’t it show EST8 Open circuit if it has no spark? Please help, don’t know if it’s the ignition coils, wiring harness break, circuit breaker failure, or ECM failure.. I already checked all the fuses and tested the lanyard switch and the neutral shift switch.