Yamaha error 15

Klepbeb

New Member
Region
Europe
I got an error 15 on an yamaha pw motor from 2015 with lcd display. It's a batavus stream but i cant find anything to connect the bike to the PC and i got the same bike twice. One display works on both bikes and the other display only on 1 so now i can only use one bike at a time. Anyone know what to do?
 
Download this copy of the Yamaha X94 service manual: https://www.manualslib.com/manual/975488/Yamaha-X94-Series.html

@Bicyclista beat me to the punch about the error codes, but it's good to have the entire PW Yamaha service manual on hand. Do note, error codes are accessed on the lcd display and not on a computer laptop interface. Battery error codes are accessed on the battery itself.
I got an error 15 on an yamaha pw motor from 2015 with lcd display. It's a batavus stream but i cant find anything to connect the bike to the PC and i got the same bike twice. One display works on both bikes and the other display only on 1 so now i can only use one bike at a time. Anyone know what to do?
Hi, did you manage to repair it?
I have error 12. Engine works fine and all works except display. I have tested with new display and is still the same. I think what manual says is to change display unit assembly- which probably is holder and controller.
I don’t know how often it happens to other Yamaha e bike systems, but last year I had similar situations but with different errors, the one that stop your engine. I also change holder and controller and it solve the issue. But each year to spend 130€ To replace faulty parts it’s just crazy in my opinion. My Batavus stream has almost 4 years and 24k km. Does anybody has similar experience with Yamaha PW ebike system?

reagrds
 
Sorry to hear about your problems with your Yamaha PW system, @Lopez. My experience has been the opposite. My Haibike's Yamaha PW system has been extremely reliable. In over 5 years and nearly 15,000 miles, nothing has gone wrong. So much so that a conventional bike shop services my bike for things like replacing worn brake pads, worn chains, and depleted tubeless tire sealant. They will not touch any of the electrical system, and fortunately nothing has ever been needed.
 
Forum threads such as this one (and there are dozens and dozens of similar ones like this, but for different ebike brands on EBR) are completely worthless to ALL owners of that particular ebike drive brand; unless the original poster responds back to any recommendations made and their findings as to if they worked; ie, what was the outcome or if the recommendations did not work. It's not only exclusive to this Yamaha thread either. But do go to the Yamaha Known Problems Thread and there are quite a few newcomers who sign on with their issues and they promptly disappear; such as we have here. So to @Klepbeb, what was the outcome to this?

@Lopez: If the display is not working, how is the motor then be able to work as you state it (the motor) works fine for you? I'm confused.

Be advised, I put my bike into operation in April 2017. Up until today, no problems, save for one loose speed sensor magnet (fixed by tightening the magnet on the rear spoke)..........and an LCD display going "wonky" which was solved by replacing the LCD display battery. That was 2 winters ago. No problems since. 4 years of riding service. Working on 17,000 miles on the bike and ebike drive system. I take care of the bike, pre-ride visual inspections of everything. Never put away wet, always wiped down. Never beaten the crap out of the bike. Wear parts like tires, replaced. Chain cleaned and lubed every other ride. Never stored outside in the damp, the rain, the cold, the snow, the extreme sun of summer. As reliable today as it was in April 2017.

Once you get down to what really is the problem with your bike, yours will return similar performance. Keep us informed of your findings and fixes.
 
Forum threads such as this one (and there are dozens and dozens of similar ones like this, but for different ebike brands on EBR) are completely worthless to ALL owners of that particular ebike drive brand; unless the original poster responds back to any recommendations made and their findings as to if they worked; ie, what was the outcome or if the recommendations did not work. It's not only exclusive to this Yamaha thread either. But do go to the Yamaha Known Problems Thread and there are quite a few newcomers who sign on with their issues and they promptly disappear; such as we have here. So to @Klepbeb, what was the outcome to this?

@Lopez: If the display is not working, how is the motor then be able to work as you state it (the motor) works fine for you? I'm confused.

Be advised, I put my bike into operation in April 2017. Up until today, no problems, save for one loose speed sensor magnet (fixed by tightening the magnet on the rear spoke)..........and an LCD display going "wonky" which was solved by replacing the LCD display battery. That was 2 winters ago. No problems since. 4 years of riding service. Working on 17,000 miles on the bike and ebike drive system. I take care of the bike, pre-ride visual inspections of everything. Never put away wet, always wiped down. Never beaten the crap out of the bike. Wear parts like tires, replaced. Chain cleaned and lubed every other ride. Never stored outside in the damp, the rain, the cold, the snow, the extreme sun of summer. As reliable today as it was in April 2017.

Once you get down to what really is the problem with your bike, yours will return similar performance. Keep us informed of your findings and fixes.
Hi, regarding error 12 and 13 as stated in manual (which was linked few posts before) power assist is normal. What means you can ride normally, using electric engine, lights, etc. The only thing is display constantly blinking Error. So you don’t see what is your speed, mode, battery level, etc.
last year I had an error that stopped power assist immediately. When I visited Batavus bike service they where not surprise, and I had to change the parts.
Regarding using the bike. Well, the bike is constantly outside. The same as 95% bikes in Netherlands. It’s not a problem for me to change brake pads, chains, tiers, and wheels frames (which are so thin because of the brake pads, that the bike feels like is braking apart) that’s all is normal. I considered last year changing display and holder and all the cables also normal. But doing the same this year is a bit too much I think.
 
Hi, regarding error 12 and 13 as stated in manual (which was linked few posts before) power assist is normal. What means you can ride normally, using electric engine, lights, etc. The only thing is display constantly blinking Error. So you don’t see what is your speed, mode, battery level, etc.
last year I had an error that stopped power assist immediately. When I visited Batavus bike service they where not surprise, and I had to change the parts.
Regarding using the bike. Well, the bike is constantly outside. The same as 95% bikes in Netherlands. It’s not a problem for me to change brake pads, chains, tiers, and wheels frames (which are so thin because of the brake pads, that the bike feels like is braking apart) that’s all is normal. I considered last year changing display and holder and all the cables also normal. But doing the same this year is a bit too much I think.
I had to look up what the Dutch climate is like and I find it quite similar to our climate here in my homestate of New Jersey; US Mid Atlantic East Coast. I personally believe your troubles are created because of the bike being kept outside.

I just took a peek into my Haibike's Yamaha Original Instructions booklet that came with the bike. It's not as in-depth as the X-94 Service Manual, but from it, I quote:

Diagnosis Mode:

The ebike systems are equipped with a diagnosis mode. When you turn on the power, if there is a fault in the ebike systems, the systems will notify you of the fault by flashing the assist mode indicator and the battery capacity indicator, alternatively and displaying Er in the speedometer......


I may be wrong and please correct me if I am, but your bike is in a constant Diagnosis Mode; with power level selection and actual power assist, not working at this time. You speak of replacing the LCD display and the holder it fits into, but you do not mention replacement of the power switch which controls the LCD display & functions as well as powering up or powering off the ebike drive system. Was this switch replaced at the time of the replacement of the LCD and holder??

If this were my ebike, I'd get it inside. At a minimum, get it inside where it is warm and let it dry out for a day or two. Again, if my Yamaha drive, I'd swing the motor down using the bottom non-drive side engine mount bolt as the pivot. Note the picture of my PW..... Note the white connector plugs? With the battery off the bike, I would carefully look at every plug, every wire running off each plug for any abnormality. I would disconnect one plug at a time, clean it with electrical contact cleaner, visually inspect the metal posts for any abnormality. Then I'd lightly apply a silicone dielectric grease inside the plug connectors to help keep out moisture; finally reconnecting it and moving onto the next plug. Do note on your bike that the wires are tightly compacted together. When the motor is tilted back up into place, you certainly do not want to pinch any wire between the motor and that metal motor mount casing it bolts to!!! Finally, retorque the motor mount bolts to the spec listed on the bolt washer.

It is still possible you have water intrusion/dampness into the LCD holder or the main power switch. Ensure the wire runs from these items, going into your frame are not chafed to bare wire. Give your bike some time in a warm ambient environment and see if the system comes on with no flashing diagnosis mode, before any other work is accomplished on your part. Let us know what you find and good luck!

100_4820.JPG
 
I had to look up what the Dutch climate is like and I find it quite similar to our climate here in my homestate of New Jersey; US Mid Atlantic East Coast. I personally believe your troubles are created because of the bike being kept outside.

I just took a peek into my Haibike's Yamaha Original Instructions booklet that came with the bike. It's not as in-depth as the X-94 Service Manual, but from it, I quote:

Diagnosis Mode:

The ebike systems are equipped with a diagnosis mode. When you turn on the power, if there is a fault in the ebike systems, the systems will notify you of the fault by flashing the assist mode indicator and the battery capacity indicator, alternatively and displaying Er in the speedometer......


I may be wrong and please correct me if I am, but your bike is in a constant Diagnosis Mode; with power level selection and actual power assist, not working at this time. You speak of replacing the LCD display and the holder it fits into, but you do not mention replacement of the power switch which controls the LCD display & functions as well as powering up or powering off the ebike drive system. Was this switch replaced at the time of the replacement of the LCD and holder??

If this were my ebike, I'd get it inside. At a minimum, get it inside where it is warm and let it dry out for a day or two. Again, if my Yamaha drive, I'd swing the motor down using the bottom non-drive side engine mount bolt as the pivot. Note the picture of my PW..... Note the white connector plugs? With the battery off the bike, I would carefully look at every plug, every wire running off each plug for any abnormality. I would disconnect one plug at a time, clean it with electrical contact cleaner, visually inspect the metal posts for any abnormality. Then I'd lightly apply a silicone dielectric grease inside the plug connectors to help keep out moisture; finally reconnecting it and moving onto the next plug. Do note on your bike that the wires are tightly compacted together. When the motor is tilted back up into place, you certainly do not want to pinch any wire between the motor and that metal motor mount casing it bolts to!!! Finally, retorque the motor mount bolts to the spec listed on the bolt washer.

It is still possible you have water intrusion/dampness into the LCD holder or the main power switch. Ensure the wire runs from these items, going into your frame are not chafed to bare wire. Give your bike some time in a warm ambient environment and see if the system comes on with no flashing diagnosis mode, before any other work is accomplished on your part. Let us know what you find and good luck!

View attachment 108862
Hi, last year I change all, holder and power switch, plus new display. I don’t know if it’s possible to change just holder as it comes as a kit with power switch.
I changed display battery now(nothing change). I have also clean connection between battery and socket when problem first appear and for 2 minutes all was working correctly but then all the same. It might be that rain and cold are factors but last year problem was during summer. But I also thought back then that could be water damage and remember even applying silicon around holder plastic as it seemed like the rubber internal washer was a bit weak.
I will try these silicone dialectic grease, sounds good. Also I didn’t know about this tilt mode for engine . I hope it’s possibly with Batavus but last year I had to pull it out completely.
will keep you posted
 
It's "motor" in English if you refer to an e-bike. It is "electric motor" but "internal combustion (or steam) engine". Just saying.
Sorry to hear about your trouble!
Stefan, I like to peek in, on the German pedelec forum as there is a more active Haibike/Yamaha community of riders sharing info and pictures than what is going on, here. And I have to say, many, many of them refer to the motor as "engine"; or at least, that is how my google translate is showing it in English. So I'm not surprised at all that Lopez there in the Netherlands, calls it an engine.....

Regards to yours and your friend's ebikes there in Poland.....do they store their bikes out in the weather as it appears Lopez does? Or are they garaged or put inside the house?

Mine stays in the garage. The battery comes off and is charged inside and kept inside before the next ride. The LCD display sits in it's mount on the bike unless we get super cold arctic weather racing in with temps in the Teens (F)......not a metric guy.
 
Stefan, I like to peek in, on the German pedelec forum as there is a more active Haibike/Yamaha community of riders sharing info and pictures than what is going on, here. And I have to say, many, many of them refer to the motor as "engine"; or at least, that is how my google translate is showing it in English. So I'm not surprised at all that Lopez there in the Netherlands, calls it an engine.....
I'm not surprised either. Which doesn't change the fact it is an "electric motor" in English :)
Regards to yours and your friend's ebikes there in Poland.....do they store their bikes out in the weather as it appears Lopez does? Or are they garaged or put inside the house?

Mine stays in the garage. The battery comes off and is charged inside and kept inside before the next ride. The LCD display sits in it's mount on the bike unless we get super cold arctic weather racing in with temps in the Teens (F)......not a metric guy.
All friends who own e-bikes (you know, these machines worth a used car) keep their rides in decent conditions. It is different for owners of traditional bikes. An aware Polish cyclist stores their bike inside, maintains the chain, inflates the wheels and what not. While many people just keep their bikes outside, rusted chains and drivetrain... It makes me weep.
 
Hi, I doubt you keep your bike outside in Poland. As I’m polish as well (czesc Stefan) and know condition there. Dutch climate is much milder.
any way, bike got some time inside which didn’t help.
It’s a stretch but if you own Tesla you also keep it inside? I keep my battery inside when is cold. But No, I don’t think you have to keep your electric bike inside. Well, only the one that can be affected by weather. Which is apparently Yamaha and its motor? I wonder how is Bosch, bafang, or Shimano performing.
 
Oh, Lopez. I live in a small village just outside Warsaw. Neighbours all keep their bikes outside and it is 50-70 bikes at least, as these people have no space in this block of flats. The only exception is my disabled neighbour who owns an e-trike, and myself (I live alone and can spare space for my Vado SL inside the flat; Vado SL has an internal non-removable battery).

I lived for two weeks in a posh apartment house in Warsaw's Natolin. The people who really cared were storing their bikes inside (in corridors). Yet fancy approximately 100 bikes parked outside, all with corroded drivetrains...

1639119205491.png


You could keep an e-bike outside provided it would be at least covered. It is no danger to motors (my experience is Specialized, Giant/Yamaha, and Chinese hub motor). Some displays are not waterproof though, and the best known to me is Giant RideControl Evo that eventually was damaged by water ingress. (Of course the battery is to be stored inside).

Lopez, isn't it the Netherlands is of maritime climate and the country is close to the sea? What about the salt?
 
Oh, Lopez. I live in a small village just outside Warsaw. Neighbours all keep their bikes outside and it is 50-70 bikes at least, as these people have no space in this block of flats. The only exception is my disabled neighbour who owns an e-trike, and myself (I live alone and can spare space for my Vado SL inside the flat; Vado SL has an internal non-removable battery).

I lived for two weeks in a posh apartment house in Warsaw's Natolin. The people who really cared were storing their bikes inside (in corridors). Yet fancy approximately 100 bikes parked outside, all with corroded drivetrains...

View attachment 108970

You could keep an e-bike outside provided it would be at least covered. It is no danger to motors (my experience is Specialized, Giant/Yamaha, and Chinese hub motor). Some displays are not waterproof though, and the best known to me is Giant RideControl Evo that eventually was damaged by water ingress. (Of course the battery is to be stored inside).

Lopez, isn't it the Netherlands is of maritime climate and the country is close to the sea? What about the salt?
Hi, found interesting posts https://electricbikereview.com/foru...ing-rc-tips-on-replacing-display-mount.23210/ regarding problems with Yamaha display and holders. Used with hibikes. I assume there ebikes got some water and dirt..
For the moment I have ordered new display holder and waiting. The system stopped working totally. I left it for 2 days next to the radiator and dry whole bike. It started to show some signs of live but error still exists.
Ps. They are some covers for displays available in the shops.. I don’t know :)
 
Ok, took out the motor. All looks good, cables,etc. Cleaned all connection. Connect all again, still error 12. Change for new display assembly parts, all works. I manage to buy the new part for 85€ so it is good news. This is 3rd display assembly in this bike. In my opinion it could be better designed or manufactured. But I think new models looks different so that could be direction. Born to ride :)
 
Hi all! Newly registered but I’ve looked on this forum before. Anyway, I have a Haibike SDuro pre-2025 with an error 15. It started after I replaced the control pad which dry rotted here in Florida. It’s the second one so this time it was easier. I power it up and error 15. I downloaded the manual as suggested and it said it was a display failure. I had doubts about that but ordered one anyway. Now I’m into like $250 for parts so I clip on the new display with high hopes and……error 15!!!😖 I dropped the motor again cleaned everything with cleaner, checked all the wires for damage and still error 15! Can anyone please help me. I’ll be happy to report all findings. Thanks! Dave
 
Dave, your post does not make it clear what year Haibike you have. Note that if you have the big LCD display, that there were 2 designs of that display. The earlier of the two DOES NOT include the Eco+ power setting. You must have the correct display for the proper year PW motor. Note that on earlier SDuro Yamaha's, that an LED display, which is nothing like the later liquid crystal display units, was used. I am assuming you do not have this type of display.

And of course, you installed a fresh CR2032 battery inside the new display, right?

After clearing that all up, I am assuming you did not have the Error 15 prior to replacing the control pad, if I read your post right. But now you do. Is that correct?

Take a close look at this enclosed link: https://www.pedelecforum.de/forum/index.php?threads/error-15.40731/ Just use Google translate for English or at the top of the screen, it will prompt whether you want to stay in German or switch to English.......

If you cleaned and inspected the wire connections down at the motor, I think it's a safe bet that your problem lies inside the LCD display holder that is mounted on the handlebar. The folks in that German Pedelec Forum thread have found broken solder connections that mate up with the display's contacts. Do a careful inspection for any solder breaks or corrosion and either repair or find a new Display holder & Wire assembly and just replace it in it's entirety.

If you are getting severe sun damage I have to ask if the bike is stored inside or out of the sun and weather. Hope this is of help & solves your problem!
 
And in the below link, found again on the German pedelec forum, the poster describes replacing the display and controller (and a new display) and no joy! After some back and forth, the original poster finds he was sold the wrong controller (again, to my previous post, there are two PW LCD displays. The latest of the PW displays and controller allow for the ECO+ motor power setting). They are not interchangeable. THAT info is not in the Yamaha X94 service manual!


PS: I did not look at the pics of the controller that Yamaha sells new (and what you bought). But now I did and I see that the controller assembly and wire harness coming from it is physically connected to a brand new Display holder. So scratch my ideas of taking apart that new display holder! But do confirm you have the right controller and display for your PW motor.
 
Back