Good morning I have a Volvo Penta 5.0gxi. What could be the reason when I scan the motor I get a outside temp reading of 24 degrees. its been 65 to 70 degrees out side. would this also be the reason I have low fuel pressure? I replaced the pump 3 times over the last year. I replaced it once the the marine replaced it twice. thinking it was a bad pump. The marine replaced all sensors have to do with the fuel system.