A friend of mine has a 2005 Glacier Bay 22' with twin Suzuki 4-Stroke 115s. One of the motors has started having the Low Oil Pressure light come on and the the engine goes into safe mode. There are no indications that the oil pressure is low, however there aren't any Oil Pressure gages on the instrument set. The oil level is fine and the engine sounds fine. On occasion, the motor will run fine too as if there wasn't ever a problem. Is this a sensor flaking out? How do you diagnose such a problem? Thanks in advance.