Check Engine Light on only over 3500 RPM?

italiawiz

Cadet
Joined
Aug 7, 2010
Messages
9
I have a 2004 5.0 Merc with a Bravo 3. I get a Check Engine Light on the Smart Craft only when the Engine is over 3500 RPM. I had the computer read and the only message is Steering Circuit. Not sure where to start? Why would a Steering Fault be only over 3500 RPM? Please Help...
 
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