Moomba Outback - Check Engine Light

Hello All - Any help with this would be greatly appreciated.

I am thinking about buying a used 2009 Moomba Outback with an Indmar Assault 325 Engine. The boat is located in the current owners garage. When I went to look at it, we put the key in the ignition and turned in to accessory. All of the gauges lit up normally, but the check engine light was also illuminated. The owner assured me that the check engine light goes off once you actually start the engine. Are there any other Moomba owners that could validate this? Does the check engine light always come on while the ignition is turned to accessory, and then go off once the engine is started?

Thanks in advance!

Eric