951 gtx with a maint cod #10

[boatmonkey82]

i have a gtx flashing a maint code of 10 and it went from 61 to 41 then to 30 then back to 40 mph it has sat for a few days and now it runs like new and the main light only comes on during start up and flashes 10 times

 

[boatmonkey82]

oh and it is the twin carb modle