KT info-code list · KT-LCD3 / KT-LCD4 Display

05 info Error on KT-LCD3 / KT-LCD4 Display

What it means + how to fix it From the manual

Quick answer

05 info on the KT-LCD3 / LCD4 means “Axis speed sensor abnormality (only applied to torque sensor systems).” Most likely cause: a loose speed sensor connector or a damaged sensor. Try this first: turn it off and on again.

This code only applies to bikes with a torque sensor.

Try this first

Free, and each takes under 5 minutes.

Turn it off and on again
Look for damage on the speed sensor

In plain English

On torque-sensing systems, part of the pedal sensor also reports speed. This code means that speed signal isn't right. Check the speed sensor connector and look for damage, then leave the sensor itself to a shop.

Step-by-step checklist

Work from the top. Steps go from free and easy to shop jobs. Switch the bike off before touching any connector. Tick each step as you go. Your progress is saved on this device.

1Turn it off and on againFree Switch the display off, wait 30 seconds, then switch it back on. If the code clears, note what you were doing when it appeared, in case it comes back.
2Look for damage on the speed sensorFree Check the speed sensor and its cable for cracks, cuts or a knocked sensor.
3Check the speed sensor cableEasy Switch off. Follow the thin cable from the speed sensor to its plug. It often runs near the chain or rear wheel, where it can get cut. Pull the plug apart and push it back together firmly.
4Unplug and check the main connectorsEasy Switch off and remove the battery. Find the round waterproof plugs along the cables (usually near the handlebar, down the frame and near the motor). Pull each one apart, look for bent pins, water, green corrosion or melted plastic, then push it back together fully with the arrows lined up.
5Have the sensor replacedShop job If the sensor is damaged or still faulty after these checks, a shop can test and replace it.

Parts you might need

As an Amazon Associate I earn from qualifying purchases. These links go straight to Amazon.

Only buy a part if the free steps didn't fix it. Always match the voltage and connector type to your bike.

Speed sensor and spoke magnet
Replaces a lost magnet or damaged speed sensor. Match your motor system.
Link coming soon
Electrical contact cleaner spray
Cleans dirt and corrosion from connector pins and battery contacts.
Link coming soon

Still not fixed?

Pages to try next:

When it's time for a shop: if you've worked through every step and the problem is still there, take the bike to an e-bike shop. Bring your notes on when it happens, plus the code.

Words on this page: Torque sensor Speed sensor