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Looks like the repair is shaping up well - managed almost 100miles over reasonably bumpy terrain and it looks much happier. Zero cutouts / E21 appearances so far :) Touch wood! I've done a fair bit of research on replacing the controller, LCD and PAS sensor since that seemed like the only...

Thanks - I was wondering what the name of those connectors was. I'll order some of those and replace it just to be on the safe side :) Will give it a bumpy test drive tomorrow and see how it goes!

I've just gone through some photos I took of the controller last year when I first got it and that damage to the TS connector was there before I dismantled it. I'm guessing I didn't understand what it did at that time and didn't think too much of it. To be fair it's a bit of a rats nest when you...

Thanks for your advice and completely agree on Suntour being too clever for their own good :) I took it all to pieces and had a good explore - thinking this might be my first step in figuring out what all the wires do in preparation for a replacement controller, pas & lcd. It all looked pretty...

No such luck with the warranty :( I feel like I've read every thread on here about it and like you say it's fantastic when it works but so unreliable. Might have to start saving for another one - or having a go with the controller replacement!

Ok, so I spoke too soon. The intermittent error is now a permanent one again. I guess the behaviour I'm seeing is what happens before it fails. That's 3x torque failures in less than 9 months. Surely this points to another problem? The bike is clean & only driven on roads so it's not like it's...

The classic 'Torque Sensor electrical problem' I've recently had the Torque sensor replaced at Halfords (for the 2nd time in 9 months) and while this has cured the consistent E21 errors I was getting I'm still getting intermittent ones. Given lock-down I'm using my E-bike to get my goverment...

Just a final update. It seems the problem is finally resolved. And it's been pretty happy since. Touch wood! So the problem wasn't the torque sensor but something to do with the crank. Apparently there are magnets inside the crank that I guess were mis-aligned, loose or something. Perhaps...

Sorry, I know we've moved on from my E21 error but just as way of an update incase anyone else stumbles on this thread. I had 2 days of blissful E21 error free days before it came back :( I suspect there is a loose / broken wire somewhere inside the sensor. Was tempted to cut the wires off...

So an update... hopefully this is useful for other users or for future me. It was a bit fiddly to get the back of the battery holder off. There are 4x smaller phillips screws & they are difficult to get at while it's attached to the bike. So I took off the entire battery holder (remove 3x hex...

Had another crack at this but no joy. I've taken off the torque sensor again. It looks brand new to be honest and the slits are clear. No sign of lights of any kind. Tried filming with my camera too as this would show up IR - but nothing. At first I thought there was a nick in the cable but on...

Thanks so much for your reply & detailed explanation. I'll have another crack at it tomorrow morning. It looked pretty clean to me but now I know what I'm looking for I'll give it a closer inspection. So given that there's 4 pillars that means there are two pairs of led & sensor? Does the fact...

I know this bike gets somewhat mixed reviews due to the cutting-out problems. After reading lots of online comments I was reasonably happy that the problems are often related to lose connections and often cable ties have seemed to solve the issue. So I went for a 2nd hand one on ebay. Looks in...