Start here — before replacing any parts
E06 on LCD M5 indicates low battery voltage. First verify charge state and charger operation; do not open the battery.
First identify the display and its protocol (M5, YL80C, YL80C EU). Codes on one display must not be applied to another.
Manual scope: LCD M5 only, not YL80C
Do these checks in order
Follow the steps below and keep a record of what changes after each one. Stop when an actual cause is confirmed.
Check that the fitted display actually is LCD M5; YL80C uses other low-voltage code conventions.
Park the bike, shut it off and inspect the external charge connection and battery mount for visible damage or heat. If damaged/swollen, stop immediately.
Charge the installed battery with an ENGWE-approved charger matching its label. Observe the normal charger indicator and battery level afterward.
Restart the bike and check whether E06 remains with the now-charged pack, without making any internal battery measurements.
If the problem is gone
E06 disappears after proper charging and the bike responds normally: battery discharge was likely the cause.
If the problem is still there
E06 remains after confirmed proper charging, or charging cannot be completed safely: stop riding and obtain battery/charger/control-system testing.
Which cause matches your result?
Use these more specific checks only when the earlier steps point to that possibility.
01On an LCD M5, E06 indicates low battery voltage
Confirm the installed LCD M5 rather than assuming another display uses E06 the same way.
Use the correct display code table.
02The battery may be discharged
Check the indicated charge level and follow ENGWE's charging instructions.
Charge with the approved equipment and retest; stop use and contact service if it heats abnormally or the warning remains.
How can I tell it is actually fixed?
After a full approved charge, restart and confirm the display reports normal battery status under a brief safe test.
Before buying a replacement part
Battery voltage and charger specs differ by market version; do not substitute a higher-voltage charger.
Where this guidance comes from
Primary reference: View the manufacturer or manual reference ↗
Applicability: LCD M5 only, not YL80C. Source evidence: ENGWE M5 manual; demand unquantified.
The instructions are original English troubleshooting explanations derived from the listed technical facts; they are not a verbatim service manual. Do not apply them to an unverified revision.