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  • O2 sensor Engine Code

    This morning while riding to work my check engine light came on. When I got to work it was reading 24&68. The research I've done has lead me to believe this is the O2 sensors have gone out. I had bought my 2009 roadstar a week ago or so. When I got it, I replaced the aftermarket Cobra slip on pipes with the stock pipes. It has a power commander v in it. I set the target AFR to 13.7-13 depending on throttle position. It has an autotuner, and it's my understanding those are the stock air fuel ratios. I haven't taken the power commander out, but I am concerned either the power commander is fighting the ECU or it is running to rich and fouling everything up. Any advice or help on this? The bike only has 5,000 miles on it so it's definitely not normal that the O2 sensors would go out this early on it.

  • #2
    Remove the power commander and let the stock ecu handle things. The O2 sensors are only used during cruise. They are ignored during idle and acceleration. If you still have the codes once the commander is removed then check the connections to the O2 sensors. During cruise the A/F mixture can go as high as 15:1 depending on temperature and other factors.
    Scott B.

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    • #3
      Should I clear the code before or after I remove the power commander to check if that worked?

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      • #4
        I replied to your PM.

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        • #5
          After. Sorry it took so long to get back to you.
          Scott B.

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