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Limp Mode on Start Up

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Old Sep 18, 2024 | 09:36 PM
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Default Limp Mode on Start Up

Rode the 21 RoadKing a couple days ago and all fine. Today, put it in neutral to back out of garage and when started, idle was stumbling and throttle was unresponsive. Limp mode? Cycled the ignition 6 times and let it do a complete sweep of gauges each time. Restarted and no issues. Ideas??
 
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Old Sep 19, 2024 | 05:43 AM
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Had the handle bars modified? It's usually something to do with the throttle by electric wire from that throttle connection and wiring.
 
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Old Sep 19, 2024 | 09:51 AM
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Did it throw any codes?
 
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Old Sep 19, 2024 | 10:30 AM
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did these codes appear?


my 2020 does that every so often... I just reset it like you did, and ride till it happens again.
 
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Old Sep 19, 2024 | 11:17 AM
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Checked codes and got ECM 120h, 220h and 151h. Looks like throttle position sensor? Cleared codes and hope they don’t come back, 😂
 
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Old Sep 19, 2024 | 11:19 AM
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Another question: Is cycling the ignition switch really a thing? Seemed to work but source of info was a bit sketchy.
 
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Old Sep 20, 2024 | 06:25 PM
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Originally Posted by LoneRiderFLH
Another question: Is cycling the ignition switch really a thing? Seemed to work but source of info was a bit sketchy.

did it work? and get the bike running correctly again? if so... yes, it's a "thing"
 
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