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Hank F.
Hank F., Technician
Category: Small Engine
Satisfied Customers: 14563
Experience:  Certified on Onan and Generac generators
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What is code 45 on a onan cmm 7000 efi

Customer Question

What is code 45 on a onan cmm 7000 efi
Submitted: 11 months ago.
Category: Small Engine
Expert:  Hank F. replied 11 months ago.

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.

Customer: replied 11 months ago.
How can I fix this?
Expert:  Hank F. replied 11 months ago.

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.