No Restart Immediately After Shutdown
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Novice
Joined: Dec 2016
Posts: 19
Likes: 1
From: Fresno CA
No Restart Immediately After Shutdown
Hi all.
I have a 2021 Road Glide FLTRX. It's only done this one other time, but a couple of weeks back, I attempted to restart the bike immediately after shutting down, and the starter wouldn't even crank. Everything came up, fuel pump ran when switching the RUN/STOP switch to RUN, but starter would not crank. Shut it down. Try to start it 30 seconds later, and the stereo hadn't even fully reset (it just turned right back on to the previous screen instead of the normal splash screen). Same thing...everything comes on, no crank.
I let it sit for about 5 minutes. By then everything had reset, and she started right up. And all was well.
However, I had a Check Engine light. Codes were as follows -
P1511h - EFI Power Management Mode
P1600h - EFI Module Processor Internal Error/Watchdog Error
P2100h - Throttle Actuator Control Motor Circuit Open
P2105h - EFI Forced Engine Shutdown
All of these codes all appeared at the same time. I cleared the codes, and none have returned.
Any ideas? Anyone else experience this.
I have a 2021 Road Glide FLTRX. It's only done this one other time, but a couple of weeks back, I attempted to restart the bike immediately after shutting down, and the starter wouldn't even crank. Everything came up, fuel pump ran when switching the RUN/STOP switch to RUN, but starter would not crank. Shut it down. Try to start it 30 seconds later, and the stereo hadn't even fully reset (it just turned right back on to the previous screen instead of the normal splash screen). Same thing...everything comes on, no crank.
I let it sit for about 5 minutes. By then everything had reset, and she started right up. And all was well.
However, I had a Check Engine light. Codes were as follows -
P1511h - EFI Power Management Mode
P1600h - EFI Module Processor Internal Error/Watchdog Error
P2100h - Throttle Actuator Control Motor Circuit Open
P2105h - EFI Forced Engine Shutdown
All of these codes all appeared at the same time. I cleared the codes, and none have returned.
Any ideas? Anyone else experience this.
Those codes are historical. My bike does this occasionally, but if I wait a few seconds it'll go ahead and crank. How long did you try to start it before turning it back off again?
As far as the codes, it looked like the throttle was physically slightly open during cranking at some point, which makes the computer angry. It's easy to do.
As far as the codes, it looked like the throttle was physically slightly open during cranking at some point, which makes the computer angry. It's easy to do.
Last edited by Ultra103; Jul 2, 2023 at 01:45 PM.
Stellar HDF Member
Joined: Oct 2005
Posts: 2,266
Likes: 935
From: Clearwater, Fl
My '21 Limited did that at about 16,000 miles. I just stopped to remove a jacket. Mine wouldn't restart for at least 10 min. Was ready to call for a tow! Everything was totally dead.
Took it to the dealer. Said they downloaded a new program in the ECM(?) per Harley. Bike has 33,000 miles now and hasn't done it again.
Couple threads here somewhere about others having that same experience
Took it to the dealer. Said they downloaded a new program in the ECM(?) per Harley. Bike has 33,000 miles now and hasn't done it again.
Couple threads here somewhere about others having that same experience
Last edited by Red; Jul 2, 2023 at 02:03 PM.
Cruiser
Joined: Sep 2018
Posts: 129
Likes: 108
From: Louisville KY
I've had the same problem with my '21 Limited. Mine can take hours to reset, but I've learned to pull a battery cable for 2-3 minutes fixes it.
I've been to my dealer multiple times. They did an ECM update once, but that didn't fix it. They keep sending it back to me with "can't reproduce".
It only happens once every few months. I assume it's something to do with the new ECMs they started using in '21. My '18 never did it. I keep waiting for a future software update....
I've been to my dealer multiple times. They did an ECM update once, but that didn't fix it. They keep sending it back to me with "can't reproduce".
It only happens once every few months. I assume it's something to do with the new ECMs they started using in '21. My '18 never did it. I keep waiting for a future software update....
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