Total voltage from the battery is too high/low

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

Quick answer

Error code 41 signifies that the total voltage from the battery is either too high or too low. This condition can affect the performance of the eBike and may require immediate attention to ensure safe operation.

Stop riding Battery 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 may show error code 41, and the motor may not operate correctly.

Likely causes, ranked

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

#1 Battery Voltage Too High

How to check: Measure the battery voltage with a multimeter to ensure it is within the specified range.

#2 Battery Voltage Too Low

How to check: Check the battery voltage using a multimeter to confirm it is not below the minimum threshold.

Troubleshooting steps

Check Battery Voltage

Tools: multimeter easy

Use a multimeter to measure the battery voltage.

If it passes →Proceed to check connections.

If it fails →Replace the battery if voltage is out of range.
Inspect Battery Connections

easy

Check all battery connections for corrosion or damage.

If it passes →If connections are good, proceed to reset the system.

If it fails →Clean or repair connections as needed.
Reset the System

easy

Turn off the eBike and turn it back on to reset the error code.

If it passes →Check if the error code is cleared.

If it fails →If the error persists, consult a professional.

When to stop and get professional help

If the battery voltage is consistently out of range or if connections are damaged.

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

More codes for H700

35 · Detection circuit for 15V has an error 36 · Detection circuit on the keypad has an error 37 · WDT circuit fault 42 · Total voltage from the battery is too high/low 43 · Total power from the battery cells is too high 44 · Voltage of the single cell is too high

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Sources & verification

Last verified: pending review Reviewed by: editorial team

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