Cranks no start?

I have spark and rpm showed on the scanner but no injector pulse with Noid light. The security light blinks before I put the key in ignition but during cranking the light stays off for few seconds and then came on solid. Unplugged MAF and CAM sensor still the same but Its start with starting fluid. The scanner won't communicate with the ECU so I used EOBD and it showed codes for both Knock sensors.