Check lights

Hello,
Just purchased a 2011 Sportsman 550 touring…500 miles..60 hrs…all fluids and levels look clean and full…the engine area knocks like crazy at idle but from what I’ve been reading that’s normal…after a little riding 15 mins r less all under 35mph and no 4wd just 2wd ..extreme laid back taken it easy …yes my first atv..lights appear..check engine and steering..got the codes but no match with manual..need help any info would be greatly appreciated..first pic engine code second steering symbol code. Thank you
Todd

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