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Hi everyone, I've recently (two months ago) purchased a 2014 street glide with a thunder max ECM. I've been getting a few trouble codes and it's gone into two different limp modes. One where the throttle wasn't responsive at all and the other where it was responsive to a certain point.
I've researched this problem a little and tried what some people have had luck with. Cleaning with contact cleaner and applying dielectric grease, but it's still doing it occasionally. When it happens I simply unplug the wire connector right behind the air filter, most of the time that works. I've also taken the front fairing off and cleaned/greased all the connections in there. While I was in there I half-*** checked the wires for sharp bends/kinks and loose wires, but everything seemed fine. After I cleaned/greased all the connections, I erased all the codes, but when it happened again, they all came back.
I've looked up the codes, but I'm not really sure where the root of the problem could be. I was wondering if anyone else has had the problems I'm having.
The codes are as follows:
ECM:
p2123
p2138
p0120
p0220
p0122
p0223
p2100
p2176
p2105
p1510
p1511
p1512
pn 8
Have you looked up the codes? Short of looking up all the codes myself it seems like a LOT of codes... you might want to consult the stealership for a thorough look over
I cant say what all those codes are or remember the codes my 2012 Streetglde threw when it went into limp mode, but I can tell you how I fixwd it.
After repinning the throttle body connector with no luck, I pulled off the throttle and cut out the green connector and soldered the wires together...all fixed.
Had a boat motor that would not run or start correctly. After trying EVERYTHING I noticed the BIG male/female electrical CONNECTOR had a couple of PIN CONNECTORS that was partially PUSHED out of position. I used some small needle nose plyers to push them back in place and applied some silicone to anchor them solid. Motor started right up and ran PERFECT after that.
Look for simple things like that.
Hi everyone, I've recently (two months ago) purchased a 2014 street glide with a thunder max ECM. I've been getting a few trouble codes and it's gone into two different limp modes. One where the throttle wasn't responsive at all and the other where it was responsive to a certain point.
I've researched this problem a little and tried what some people have had luck with. Cleaning with contact cleaner and applying dielectric grease, but it's still doing it occasionally. When it happens I simply unplug the wire connector right behind the air filter, most of the time that works. I've also taken the front fairing off and cleaned/greased all the connections in there. While I was in there I half-*** checked the wires for sharp bends/kinks and loose wires, but everything seemed fine. After I cleaned/greased all the connections, I erased all the codes, but when it happened again, they all came back.
I've looked up the codes, but I'm not really sure where the root of the problem could be. I was wondering if anyone else has had the problems I'm having.
The codes are as follows:
ECM:
p2123 - TGS1 high
p2138 - TGS correlation error (Twist Grip Sensor)
p0120 - TPS1 range error
p0220 - TPS2 ranger error
p0122 - TPS1 Low
p0223 - TPS2 Low/Open
p2100 - EFI Motor Circuit Open
p2176 - EFI Closed Position Not Learned
p2105 - EFI Forced Engine Shutdown
p1510 - EFI Limited Performance Mode
p1511 - EFI Power Management Mode
p1512 - EFI Forced Idle Mode
pn 8
RAD:
u0002 - CAN comm bus perf error
pn 76000075
Any and all help is greatly appreciated!
Quite a few codes, dealing with a few different systems....
Did you clear them and see which, if any, come back....?
Often, when several codes from different systems all throw at once, it is a sign of weak 12 volt power... I'd check the battery (load test not just voltage check), and all the power wires/connections and check the grounds... A dirty or intermittent connection can cause multiple-random codes to be thrown..
If the power is good and power connections clean, then start to look at the electrical connectors for all the systems mentioned. You are looking for loose, corroded, or bad connector pins (ie: pins not aligning straight, making good contact, or a bent pin in the connector)
If all that checks good... then time to check the sensors/wires/modules for each of the affected systems...
There are no real short cuts when hunting for an electrical problem. I hate them, but deal with them when necessary. Be thorough, systematic, and persistent in your checks..... you will eventually find the issue(s)...
Good luck with your diagnosis, and report back what you find...
Last edited by hattitude; May 19, 2022 at 10:52 PM.
From your statement reseating the throttle body connector I recommend as others said be sure the pins are fully seated and not sliding back as the connectors are pushed together.
One suggestion, make sure the right hand grip is firmly seated in the gear at the end of the handlebar. In other words, pull the grip away from the end of the handlebar as far as you can with everything still clamped together and see if it is still in contact with the TBW gear at the end of the bar as you try to turn it. I installed a set of grips a while back and I was in a rush and didn't verify the gear to grip play and when I went for a ride the grip would slide to the right and loose contact with the TBW gear and the throttle wouldn't engage and I got some similar codes. If that checks out I would look to the battery, then any loose connections. Good luck on your project.
Here is a permanent fix: get GM weatherpack connectors, male and female, 6-pin. It does not matter what pin type you choose as long as they match male/female and will connect to each other. Make a male/female harness with 4" of wires coming from each connector. Unplug your TB connector and cut it off after notating the wire colors to match to your new harness per position. Clean the TB terminals with fine sandpaper, blow out the sand with compressed air, spray with terminal cleaner, and then solder one end of the new harness you made to the TB terminals, wire by wire. Note: solder stripped bare wire to TB terminal only; using female terminals here defeats the purpose. When done with the TB, fill the connector void with epoxy to weatherproof it. Prepare some heat-shrink tubing and slip over each wire you're about to solder, then solder the other harness to the bike harness being careful to match up the wire colors per your prior observation. Use the heat-shrink tubing to seal them up nice. Put a little dielectric grease on the terminals in the GM weatherpack connectors, then snap them together. Tidy the the routing of your harness to hide it, then ride on.
Unless your TB or ECM fails, you will never have this issue again.
I cant remember exactly the codes I was getting but Im thinking it was the same or close to your list. What fixed it for me was completely replacing the connector to the throttle body. New connector and all new pins.
Also, coat the connector in silicon grease before plugging it back in.
To all who asked, yes, I reset the codes and they all came back. I also checked for pins not pushing out as I put the connectors together. Thank you all for the responses, I will be checking everything y'all suggested and report back what I find. I feel like this is an ongoing problem with not very much info to fix it. It also seems that the connectors are junk and need to be replaced or cut out and hard wired. I will try to keep y'all posted with what I find.
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Throttle by wire
