A couple weeks ago my engine light came on. I have a 44 super mini Z with a 23 Kawi FH680V with 1200 hours. When the mower first starts up, the light is off. But when it runs for a little while, it comes on. I replaced the oil pressure sensor in the back, oil level is good, no leaks. I also checked the connections and fuses. Does anybody have any ideas, should I be concerned?