I have a 2007 883 Sportster that I absolutely love. No performance problems noted and the bike runs strong with 4,000 original miles on it. I am the 2nd owner. I recently noticed the check engine light came on for about 7 seconds after a start up then extinguished but have noticed no performance or starting problems. The codes I found were P0261 and P0263. I cleared them, started up and drove it about 2 hours the next day. The same codes came back. This started after I did 2 things differently, 1), I started using a battery tender on the battery for precautionary measures, 2), I put the stock baffels back in my Vance & Hines Short Shot exhaust system for more sound. (I had been running the quiet baffles.) Other than that nothing else was done. Am I looking at a weak battery or something else? The bike starts flawlessly every time. Thanks for looking at this thread.