2008 optimax 115. 22 pin groundfault

[dantep]

Long story will make short. Had issue with oil pump. Got that changed out. Then all of a sudden had the 4 beeps every 2 minutes. Took it to who I thought was a mercury mechanic. He was not. He did tell me it was a pin 22 ground fault. He wants to change the whole ecu out. 2800 for the part. Says he can't promise that will fix it. Anyone ever had this fault? If so what was the fix? Thanks for any help.

 

[R_P]

99.9% that 4 beeps every 2 is low oil warning. Tank may be full but magnets on the float fall off and sensor reads low oil. Oil tank replacement was the fix.

 

[dantep]

I did the bypass on the plug-in everyone talks about. But it still does the beep. Mechanic who looked at it, stated the same thing. I was hoping it was just the oil reservoir.

 

[R_P]

Reservoir under the cowl, correct?
I’d then check the wiring between the sensor and ecu before spending on the ecu

 

[dantep]

Will do. Thank you.