Motor temperature sensor fault

Stop riding Last verified: pending review Reviewed by: editorial team

Quick answer

Error Code 11 indicates a fault with the motor temperature sensor. This can lead to the motor not functioning properly, affecting the overall performance of the e-bike. It is crucial to address this issue to ensure safe operation.

Stop riding Drive unit / motor Often DIY-friendly Beginner (15–30 min)

Does this apply to your bike?

H700 · Bafang · Common displays: DP E171

Heads-up: the same number can mean different things on other systems — always check your drive system first. Browse all drive systems →

What you’ll notice

The e-bike may stop suddenly, fail to accelerate, or exhibit unusual motor behavior.

Likely causes, ranked

Start at #1 — causes are ordered by how often they turn out to be the problem.

#1 Battery Voltage Issues

How to check: Ensure the battery is fully charged and check for corrosion or dirt on terminals.

#2 Loose Connections or Damaged Wiring

How to check: Inspect all connectors from the battery to the motor and controller for secure connections.

#3 Faulty Motor or Controller

How to check: If basic checks do not resolve the issue, consider professional inspection of the motor and controller.

Troubleshooting steps

Check the Battery

easy

Ensure the battery is fully charged and inspect terminals for any corrosion.

If it passes →Inspect Wiring and Connections

If it fails →Replace the battery if it cannot hold a charge.
Inspect Wiring and Connections

easy

Unplug and replug all connectors, checking for frayed wires or damage.

If it passes →Restart the Motor

If it fails →Repair any damaged wiring or connectors.
Restart the Motor

easy

Turn off the e-bike, wait 10-20 seconds, then power it back on.

If it passes →Test Ride

If it fails →Consider professional help if the error persists.
Test Ride

easy

Take a short ride to see if the motor operates normally.

If it passes →Error resolved.

If it fails →Seek professional repair.

When to stop and get professional help

If the motor does not respond after following the steps, seek professional assistance.

Never open, puncture, or disassemble the battery pack, and never bypass the BMS. See our safety guide.

More codes for H700

08 · Error with the hall sensor 09 · Fault with motor phase winding 10 · Overtemperature of motor 12 · Over current of motor 13 · Battery temperature sensor fault 14 · Overtemperature of controller

Different number? Type it into the search box at the top of the page.

Did this fix your problem?

None% of riders reported this solved

Sources & verification

Last verified: pending review Reviewed by: editorial team

Missing a code or step? Tell us.

Spotted a code we don’t cover, or a step that didn’t match your bike? Send it in — submissions shape what we research next.