Had my fuel rail off last night and all put back together... started the car got the subaru sound I was like oh **** so I checked the scanner and it came up p203 on cylinder 3 so I checked my injector wires, and connection everything was good... started the car back up and it ran fine and hasnt given me a problem all morning... should I be worried about this?

 

that was a typo sorry I meant p0203