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Sportster s trouble code PLEASE HELP

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Old Aug 14, 2025 | 04:59 AM
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Default Sportster s trouble code PLEASE HELP

Hi everyone,

I have a 2024 Harley-Davidson Sportster S RH1250 with about 350 km on it. A few days ago, I noticed a serious problem — the bike won’t rev past roughly 3000 RPM, it feels like it’s in limp mode, and it accelerates very slowly. The Check Engine light is on.



I ran the built-in diagnostics and got the code P180000P from the ECM (P module). I can’t find this code in the standard Harley trouble code lists.

Has anyone seen this P180000P code before on a Sportster S? Is it related to the throttle system, ECM software, or something else? Any advice or experience would be really helpful.

Thanks in advance!


 

Last edited by tvara; Aug 14, 2025 at 05:02 AM.
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Old Aug 14, 2025 | 06:15 AM
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Warranty, take it back to the dealer and have them fix it.

Can't help with what the code means.
 
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Old Aug 14, 2025 | 06:19 AM
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Originally Posted by CoolBreeze3646
Warranty, take it back to the dealer and have them fix it.

Can't help with what the code means.
I live in another country and we don't have a dealership here.
 
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Old Aug 14, 2025 | 06:52 AM
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Yes- it sounds like you are in limp mode.
i couldnt find that specific code on my google search either- but you are correct in that the P code means powertrain.
id look for loose connectors- wiggle some harnesses- and make sure battery voltage is ok- these bikes seem very voltage sensitive.
keep us posted!
 
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Old Aug 14, 2025 | 07:00 AM
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Originally Posted by RDHIGH
Yes- it sounds like you are in limp mode.
i couldnt find that specific code on my google search either- but you are correct in that the P code means powertrain.
id look for loose connectors- wiggle some harnesses- and make sure battery voltage is ok- these bikes seem very voltage sensitive.
keep us posted!
When I bought this motorcycle, the battery was completely dead and I had to recharge it. After that it came back to life, and now the voltage level is between 12.5 and 14.5. Could this still be the problem?
 
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Old Aug 14, 2025 | 07:40 AM
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Originally Posted by tvara
Hi everyone,

I have a 2024 Harley-Davidson Sportster S RH1250 with about 350 km on it. A few days ago, I noticed a serious problem — the bike won’t rev past roughly 3000 RPM, it feels like it’s in limp mode, and it accelerates very slowly. The Check Engine light is on.



I ran the built-in diagnostics and got the code P180000P from the ECM (P module). I can’t find this code in the standard Harley trouble code lists.

Has anyone seen this P180000P code before on a Sportster S? Is it related to the throttle system, ECM software, or something else? Any advice or experience would be really helpful.

Thanks in advance!

VVT control solenoid rear exhaust circuit open

 
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Old Aug 14, 2025 | 07:46 AM
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Originally Posted by Jay1250T
VVT control solenoid rear exhaust circuit open
I don't understand what you mean. If you don't mind, please explain in more detail what the problem is.
 
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Old Aug 14, 2025 | 07:51 AM
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Originally Posted by Jay1250T
VVT control solenoid rear exhaust circuit open
Thanks Jay! Again- if the circuit is open- could be a loose connector- loose pin in a connector- broken wire. Poke around and inspect.
 
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Old Aug 14, 2025 | 08:02 AM
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Originally Posted by RDHIGH
Thanks Jay! Again- if the circuit is open- could be a loose connector- loose pin in a connector- broken wire. Poke around and inspect.
Could you please specify exactly what I should check for the VVT control solenoid rear exhaust circuit open issue? For example, should I look for specific connectors, wires, or pins, and how should I inspect them?
 
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Old Aug 14, 2025 | 08:09 AM
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I’m having trouble figuring out this model, and I’m in a place where there’s no service or dealership nearby to inspect my bike. I have to do everything myself, so if you can help me and explain clearly what I should do—such as what to check, which parts to buy, and which ones to replace—I’d greatly appreciate it. Thank you in advance, Harley team members🙏🙏
 
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