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ECU error when riding 2up

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Old Jun 28, 2023 | 09:17 AM
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Default ECU error when riding 2up

I have a 2016 Low Rider S, and it seems like every time I ride two-up, I get an issue with the speedometer cutting out, a bunch of error lights and then a speedo sweep. I've tried tightening the battery posts, and I know the battery is fine because it's brand new.

Is there a weight sensor or angle indicator that could be tripping causing the issues or what else could I be looking at?
 
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Old Jun 28, 2023 | 09:22 AM
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What are the codes you're getting?

To me it sounds like a loose wire or something getting pulled or pushed enough to lose connection when the weight of a passenger is on your bike. Does the bike stay running like normal when it happens?
 
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Old Jun 28, 2023 | 10:23 AM
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Originally Posted by 2500hdon37s
What are the codes you're getting?

To me it sounds like a loose wire or something getting pulled or pushed enough to lose connection when the weight of a passenger is on your bike. Does the bike stay running like normal when it happens?
Yeah, it runs fine, and it's only the speedo, because all my ECU signals are good because everything works perfectly on my power vision.
 
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Old Jun 28, 2023 | 11:33 AM
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When you tightened the battery posts did you also check the other ends of the cables?
 
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Old Jun 28, 2023 | 12:01 PM
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Do you have a wire loom under rear fender that has scrubbed tire?
 
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Old Jun 30, 2023 | 04:00 PM
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Just how heavy is your rider for you to ask that?. Better not let her see that text.

Make sure your speedometer plug is reset.
 

Last edited by Jackie Paper; Jun 30, 2023 at 04:03 PM.
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Old Jun 30, 2023 | 10:20 PM
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I would put money on something screwing up the CAN bus. You'll need to extract codes.. If on the speedo has issues, it's likely between the ECU / BCM and the Speedo.

Add:
Maybe a pinched wire under the seat?
 
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