Warning alert ?

Joined
Feb 22, 2009
Location
California
#1
I have a 89 Johnson 200GT, when the motor is running I'm hearing a very low beep that sounds every 20 seconds. I read the manual and it says it's a warning for low oil level in the VRO tank however the tank is over half full. The sound is very low not loud like when my VRO unit went out years ago. My question is could it be a bad sensor or worse. Any ideas? Thanks Bruce