Went to load up my sidewinder for a weekend in Revy... no start! Code sd_43 on the dash. Apparently something to do with fuel system electrical supply. On my apex this meant fuel pump relay but swapping the relays changed nothing. Turns over fine, battery is good, connections at the battery are good. Any ideas? Its still on warranty but would prefer to fix myself, if it's something simple, rather than loading a dead sled on a deck.