[Tom Goldman]

Vic,you must press and hold the switch on the generator to get the complete code.
The 3 or 33 code just tells you there are other codes present
Matt Schurman just repaired my Onan for the same problem ,it would run fine and then after being shut off it would not crank over to restart.
Had a code pertaining to the governer,altho it actually was a problem with the inverter section which is pretty much the brain of the generator.