Small Engine Troubleshooting Problems? Ask a Mechanic Now.
CMM is not a model number, but since you specified this is an EFI unit and is 7kW, I am assuming this is in the HGJ series.
On that unit, Code 45 is Speed Sense Fault. It means that the controller can not determine how fast the engine is running.
I just noticed that you have 2 questions open for the same problem.
Close this question out, and we can work off the other one.