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

Error 45 on Bafang DP E170 / E180 / E181 Display

What it means + how to fix it From the manual

Quick answer

Error 45 on the Bafang E170 / E180 / E181 means “Temperature from the battery is too high.” Most likely cause: hot weather, hard riding, or charging right after a ride. Try this first: restart the system first.

Try this first

Free, and each takes under 5 minutes.

Restart the system first
Let the battery cool somewhere safe

In plain English

The battery is too hot to use safely. Hot sun, hard riding and charging straight after a ride are common causes. Let it cool before riding or charging.

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.
2Let the battery cool somewhere safeFree Move the bike out of the sun and let the battery cool on a hard, non-flammable surface away from anything that can burn. Don't charge it while it's hot.
3Have 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 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.