2017 volvo 300 in a Monterey boat all sudden goes into limp mode saying service port side engine?? Any help on this one finally got it loaded. Waited about 20 min cranked back up and ran fine to load. 181° on temp gauge. Set all winter after dumping the valve so not sure what's going.on.

 

Hard to tell. You need to get a marine mechanic with a Volvo scanner to see what is going on. They sell a scanner but it's about $800.