Overtemperature of controller

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

Quick answer

Error code 14 signifies that the controller has reached its maximum allowable temperature, causing the motor to stop functioning. This is a protective measure to prevent damage to the controller. The issue typically resolves once the system cools down.

Stop riding 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 display shows error code 14, and the motor is non-functional.

Likely causes, ranked

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

#1 Overheating of the controller

How to check: Monitor the controller temperature; if it feels excessively hot, this may indicate overheating.

Troubleshooting steps

Allow the system to cool down

easy

Turn off the system and let it cool before restarting.

If it passes →Check if the error clears after cooling.

If it fails →Proceed to the next step.
Check connections and components

intermediate

Inspect all connections to ensure they are secure and free from damage.

If it passes →If connections are fine, proceed to the next step.

If it fails →Repair or replace damaged components.
Contact Bafang support

easy

If the error persists after cooling and checking connections, contact Bafang for further assistance.

If it passes →N/A

If it fails →N/A

When to stop and get professional help

If the controller continues to overheat after following the steps, stop and see a professional.

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

More codes for H700

11 · Motor temperature sensor fault 12 · Over current of motor 13 · Battery temperature sensor fault 15 · Controller temperature sensor fault 21 · Speed sensor fault 25 · Torque signal fault

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Sources & verification

Last verified: pending review Reviewed by: editorial team

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