Error 02 Question yolin control! (Kaijielaisi)

Fly

Well-known member
Local time
6:22 AM
Joined
Jul 16, 2025
Messages
215
Location
Vian Okla
My 02 error comes up after my control is turned on after 6 sec. I have looked everywhere & this is a common thing. It is said to be
The brakes. I have unplugged the connectors removed the battery to reset every thing. This bike is very new, 30 miles on it. When
I apply the ether or both brakes it goes out? Then comes back on. For a little while I was getting a 030 error. After entering that Question
A YouTube video said to remove the battery & with the battery out whole down on display button for a short time it flashed & went out.
I reinstalled battery & that fixed the 030 error. Now back to the 02 error it still comes on after 6 sec. & goes out when I apply brakes. I have
Unplugged the connectors check the pins, the whole 9 yards. I been driving it like that. Any suggestions?
 
Hi Fly. What happens when you disconnect the brake sensors? Does the code go away then? There is a video called, " Keteles left hand oil brake disassembly". That video will show you where some of the connections are.
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Boy I have more problems & they keep changing. I bought this bike, a month ago and it worked flawless for about
30 to 40 mile in. Then the troubles started. My pass became intermittent. I went threw unplugging connection’s checked
the probes were inline with the connector holes. Sprayed contact cleaner in them ect. I ordered two different petals magnet
Sensors. Mine has 6 magnets. The first one said it was a 12-6 magnet sensor!, plus the color wires were in different. I set
It a side & ordered another from AiiExspess. After long wait it came in. Installed it. I then took it for a ride, worked great,
Until till about a mile from home. It would work in pass only. I could start pedaling hit the throttle it would work then stop.
I went to the yolin website copied every code down. This morning I went threw every one & checked my codes were set
Right. I took it out this evening now my throttle is intermittent. Also it developed a wine noise from the rear motor. Now what
To do! I need to contact Kaijielaisi @ tail to them. Anyone hear have an idea what to do ?
 
Hi Fly, it sounds like one problem is in your throttle. There is a website called, " ElectricScooterParts.com" they have very good instructions on diagnosing throttle problems. They pretty much call everything a scooter, so don't let that throw you off. If you go to their Electric Scooter Repair Help area and bring up Throttle Repair, they will show you how to test it with a meter. They also show you how to hook up three little batteries for 5 volt testing. I don't know which throttle you have. Some of these high wattage ebikes have fancier throttles with ignition keys and hall sensors. They have a big parts dept. so you will probably see your throttle type there, this should help you narrow down at least this piece of things.
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Darn it Super Fly if you lived near me we'd get'er fixxed up for ya mate! :cool:
 
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