DT 140 EFI Gauge Question

[delta229]

I have a DT 140 EFI engine that has a "Multi-Function" gauge installed. (Part Number 34701-92x50). The engine runs fine and all fuctions of the gauge work except the red light below the oil level stays lit. I have looked hard to locate any information about the model and the functions of the gauge. I would appreciate any help.

[boats.net]

Probably need to test oil level sensor and wiring.