Bafang DP E170.CAN / E180.CAN / E181.CAN code list · Bafang DP E170 / E180 / E181 Display

Error 41 on Bafang DP E170 / E180 / E181 Display

What it means + how to fix it From the manual

Quick answer

Error 41 on the Bafang E170 / E180 / E181 means “Total voltage from the battery is too high.” Most likely cause: a charger or battery that doesn't match the system, or a battery fault. Try this first: restart the system first.

Try this first

Free, and each takes under 5 minutes.

Restart the system first
Unplug the charger
Check the charger matches the battery

In plain English

The battery is reporting that its total voltage is above the safe range. Bafang's manual sends this to your retailer. Make sure the charger matches the battery, then leave the rest 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.

1Restart the system firstFree Bafang's manual says to restart first whenever an error code appears: switch the system off, wait a few seconds, then switch it back on. If the code doesn't go away, carry on with the steps below.
2Unplug the chargerFree If the battery is on charge, unplug the charger and stop charging.
3Check the charger matches the batteryFree Make sure the charger's output voltage matches what's printed on your battery. Stop using a charger that doesn't match.
4Have the battery testedShop job A shop can test the battery and its protection circuit and tell you if it needs replacing. Never open the battery pack yourself.

Parts you might need

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

Replacement e-bike charger
Only if your charger is faulty. Must match your battery's voltage and plug type exactly.
Link coming soon
Replacement e-bike battery
Only if a shop confirms your battery is worn out or faulty. Must match voltage, mount and connector.
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.