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Hank F.
Hank F., Technician
Category: Small Engine
Satisfied Customers: 15012
Experience:  Certified on Onan and Generac generators
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I have an Onan 7HGJAB-900D. It stalls when I apply the

Customer Question

Hello. I have an Onan 7HGJAB-900D. It stalls when I apply the brakes. It also shuts off randomly. Shows code 47. I recently took it to the Onan service center and they replaced the magnetos and gave a full tune up. It still stalls when brakes are applied and shuts off randomly when sitting still. Code 47. Could it be a faulty fuel pump? Loose wire?
Submitted: 10 months ago.
Category: Small Engine
Customer: replied 10 months ago.
Gas tank is above 3/4.
Expert:  Hank F. replied 10 months ago.

Hello, my name is ***** ***** I am going to assist you with this.

Code 47 is Ignition Fault. It is set when the controller does not see a signal from the coil.

There are only a few possibilities:

1. Bad coil.

2. Bad connection on the coil enable wire.

3. Bad pin at the controller.

4. Bad controller.

Since both coils are new, it is very doubtful that they are the problem.

Unless someone has taken the connector loose from the controller, there is no way a pin can be bent.

This only leaves a bad wire, or a bad controller.

I would check the wires first. In fact, since the unit has to be completely torn down to access the wires, I would probably just replace them.

There is no real way to test the controller, other than process of elimination, and it is too expensive an item to just replace on a whim.

Expert:  Hank F. replied 10 months ago.

Was this what you wanted to know?