200 EFI Oil Alarm

[need5biguns56]

2005 EFI 200. On the way back to the ramp oil alarm started going off. 4 beeps. We stopped and checked the oil tank on the side of the motor was full and under pressure. Tank by the batteries was 1/3 full and under pressure. Does the tank by the batteries have a sensor that might go bad or do you think it the sensor on the tank at the motor. I plan on adding more oil in the tank that's 1/3 full to see if it makes a difference. Motor never ran hot. Thanks
Sorry about posting in wrong spot and not reading the rules. Here is what I found on the paper work for the motor
Model # 1-200413D Serial #1B149276 2.5L

[acesover]

It will help you to receive faster, and more accurate responses if you will post your questions in the appropriate forum:

Mercury Motors (this forum)
TWO STROKE models (Less than 135 hp).

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Thanks!

[EuropeanAM]

Moving your post to the 2.5L Forum for you.

If you would, please take a moment to review the Announcements at the top of the Forum, and be sure to provide the Required Info (serial number) when posting. Thanks!