What if any codes do you show...??

Have you load tested your battery? And I would also check your charging system... Sounds like your not charging the battery, after it is topped off at home on the charger.

 

Hey, stavi

Hey, stavi

Sorry but it's been way too long ago for me to have any meaningful recollection of what fixed it. I do know for sure that the 2016 Ultra Limited finally solved the problem once and for all, ha ha.

That 09 Ultra gave me continuous problems, especially the throttle and limp mode, it was a lemon. The extended warranty was the only reason I held onto it as long as I did. I renamed it Calamity after a couple of years, because that's what it was!

Good Luck
Cecil

 

P0120, p0123,p0220, p0222. P1510, P1511,
sorry, I shouldn’t have said “ nothing” when starting it up. Because the bike will start every time, just no throttle response. I was thinking it was the battery for a bit (maybe not enough to send an electrical signal to the Twist grip sensor) but then why would it start?
I this just happened so I’m about to pull the battery and get it load tested, just to be sure.

 

This info changes everything... but IMHO, when having a what appears to be an electrical problem, I always start by verifying I have a good, solid 12v source.. especially if plugging into a charger fixes the issue.

These all point to a bad TPS, now I realize why you are focused on the Throttle Position Sensor.

I'm no electrical guru, but I believe the throttle-by-wire bikes went from a stand alone TPS to one that is part of the electronic throttle body. I would check that connector to see if that is the problem.

You could also check the connections on your Twist Grip Sensor, and also looking for a bare, loose, corroded wire that could cause it to lose signal completely, and intermittently.... I can't offer any other suggestions.

I'm sure the electrical gurus will have more to share.. and correct me if I am off base...

You may consider starting a new thread of your own, with your specific problem. It may attract new eyes. I accidentally opened this one as I usually don't read old, resurrected threads.

PS- I found this on a search. Unknown if it's good info or not. Hopefully the experts can verify its credibility:

"Motorcycle Mechanic: Joseph Yother

Will the motorcycle start and run, it just keeps bringing up that p1511 code?

Customer
it will but not easily
but yes it will not let me erase that code

Motorcycle Mechanic: Joseph Yother

Okay, this is going to be a bit long-winded so hang in there with me.

Customer
all good


Motorcycle Mechanic: Joseph Yother

The p1511 code on The late model Harley bikes with fly by wire throttle is not related to a twist grip sensor. The main culprit of this code is usually a failing or failed induction module / throttle body assembly.

These units experience a phenomenon known as terminal fretting. In layman's terms, what is happening is the connector sockets for the wire terminals themselves inside the main harness plug that connects to the throttle body will loosen over time, then you add in heat and vibration from a twin cam trying to shake itself to death every time the crank comes around and it literally braids away some of the 10 plating on the connector sockets and pins themselves.

Customer
You're thinkin it's the plug connecting the harness to the throttle body

Motorcycle Mechanic: Joseph Yother

Sometimes, you can fix this temporarily or prolong the life of it by depending the connector and very gently prying up the contact tab to allow it to make better contact with the mail pin that is in the side of the throttle body itself. Keep in mind, that this is only a temporary fix and eventually the problem will reoccur.

The only surefire way to fix this, is to cut the individual pins off of their respective wires where it slips into the harness connector and install the updated pins that Harley has with a thicker plating that also uses a different type of conductor alloy, and also unfortunately you have to replace the induction module / throttle body.

When the terminal fretting starts to advance to the point to where it causes drivability issues, or throws the bike into limp home mode what is happening is the terminals in the throttle body can no longer make solid contact with the wire terminals from the harness coming into it and as a result the ECU throws that code and will also put the bike in limp home mode because it cannot maintain a constant signal between requested throttle angle which is a output from The twist grip sensor and compare it to actual throttle angle which is what it's actually reading at the throttle body itself.

Like I said, what I was talking about about tightening up the sockets is only a temporary fix, and there is really no way to predict how long it will remedy the issue. Sometimes we see bikes that will go a year or more before trouble reoccurs, on the flip side we've seen bikes that didn't even make it out of the parking lot of the shop during a test ride after the pins were tightened up.

They only sure fire way to fix this, is to replace the induction module, and replace the connector terminals inside the main harness connector that attaches to the throttle body."

 

Is there a time when the factory began using the updated terminals on the wiring harnesses or is this an ongoing problem most of us can expect at some time??

 

example of fretting on my module. if you look closely you can see it.
I bought a used one and no more issues. cleaning the pins worked for one riding season then no more. also swapped the pigtail.

 

I can't answer that question, but ....

The TPS was a separate sensor on the cable bikes. When the HD bikes went to throttle by wire, it became part of the electronic throttle body. They both had connectors that would need to be addressed form time to time.

Here's a video by Doc Harley speaking of the TPS, but doesn't address the fretting issues some have found. At 3:05 it addresses the throttle by wire bikes

 

No Responce.