Aventon Mid Drive – Bike Shuts Off While Riding (ACU Equipped Models) TroubleshootingUpdated 2 days ago
This article explains how to troubleshoot an Aventon mid drive eBike that shuts off while riding on ACU-equipped models.
Use this article if your bike:
powers off while riding
loses power unexpectedly while riding
shuts down during use
displays shutdown-related error behaviour
intermittently turns off while riding
If anything looks unsafe or damaged, stop riding and contact support before continuing.
Before You Start
Please prepare the following:
order number or proof of purchase
Aventon model
photo or video of the issue
photo of the display screen
details about when the issue first appeared
confirmation of whether the bike powers back on
confirmation of whether the battery charges
confirmation of whether the display turns on
confirmation of whether the motor engages
confirmation of whether the issue happened after charging, riding, transport, storage, water exposure, crash, impact, modification, or third-party repair
photos of any visible damage
Safety Warnings
Do not continue riding if the bike shuts off repeatedly while riding.
Do not ride if there is visible damage, overheating, smoke, burning smell, or water exposure.
Do not open sealed electrical components.
Do not work on wiring while the bike is powered on or charging.
Stop and contact support if you are unsure.
What This Issue Means
This issue means the bike is unexpectedly losing power while riding.
The issue may involve:
the display
the battery connection
the controller
the light harness
battery terminal connections
Possible Causes
Possible causes include:
damage to the battery, display, or controller
disconnected or damaged cable between the battery and controller
worn cable
broken connector
open circuit
damaged front or rear light cable
short circuit
Troubleshooting Steps
Step 1 – Check the Display Behaviour During Shutdown
When the bike shuts down, pay close attention to the display screen.
Check whether the normal shutdown logo appears on the display.
If yes
Continue to Step 2.
If no
Continue to Step 3.
If the issue clears
Monitor the bike during future rides.
If the issue remains
Continue to the next step.
Step 2 – Normal Shutdown Logo Appears
If the normal shutdown logo appears during the shutdown event, the display may be involved.
Restart the bike and test ride carefully in a safe area.
If yes
If the bike shuts off again:
please contact our support team with the photos/videos listed below so we can review the next step
If no
Continue monitoring the bike.
If the issue clears
The shutdown may have been temporary.
If the issue remains
Contact support.
Step 3 – Check for E46 or E47 Error Codes
Check whether:
E46
E47
appears during or before the shutdown.
If yes
Continue to Step 4.
If no
Continue to Step 5.
If the issue clears
Monitor the bike during future rides.
If the issue remains
Continue to the next step.
Step 4 – Inspect for Light Harness Related Issues
E46 or E47 may indicate an issue involving the light harness.
Check for:
visible cable damage
pinched wiring
disconnected visible connectors
impact damage near front or rear lights
Only inspect accessible external areas.
Do not open sealed electrical components.
If yes
If visible damage is found:
stop riding the bike
contact support with photos of the damaged area
If no
Continue to Step 5.
If the issue clears
The issue may have been caused by a temporary light harness connection issue.
If the issue remains
Continue to Step 5.
Step 5 – Inspect the Battery and Controller Connection Area
Power the bike off before continuing.
Inspect accessible external areas around:
the battery connection
battery terminal area
visible controller cable routing
Check for:
loose visible connectors
dirt or debris
visible cable wear
bent pins
corrosion
water exposure
impact damage
If safe to do so:
disconnect and reconnect accessible external battery connections
clean accessible connection areas carefully
reinstall the battery securely
Then power the bike back on and retest.
If yes
If visible damage or corrosion is found:
stop riding the bike
contact support with photos/videos listed below
If no
Continue to Step 6.
If the issue clears
The issue may have been caused by a loose or contaminated connection.
Continue monitoring the bike.
If the issue remains
Continue to Step 6.
Step 6 – Test the Bike Again
After reconnecting and reinstalling the battery:
power the bike on
confirm the display powers on normally
confirm the motor engages
carefully test ride in a safe area
If yes
If the bike shuts off again:
continue to Step 7
If no
Continue monitoring the bike.
If the issue clears
The issue may have been caused by an intermittent battery or connection issue.
If the issue remains
Continue to Step 7.
Step 7 – Contact Support
If the bike continues shutting off while riding after completing the checks above:
stop riding the bike
do not continue troubleshooting internal electrical components
Please contact our support team with the photos/videos listed below so we can review the next step.
The issue may involve:
the battery terminal
controller
battery
internal wiring
internal electrical components
When To Contact Support
Please contact support if:
the bike continues shutting off while riding
E46 or E47 errors remain
the display does not power on
the battery does not charge
the motor does not engage
visible damage is found
connectors appear damaged or corroded
the bike has been exposed to water, impact, transport damage, modification, or third-party repair
you are unsure how to safely complete any step
If the issue remains after this step, please contact our support team and include the photos/videos listed below.
What To Send Support
Please send:
order number or proof of purchase
Aventon model
photo or video showing the shutdown issue
photo of the display
photo of any error codes
photo of the battery area
photo of accessible visible connectors, if safe
photos of any visible damage
confirmation of whether the bike powers back on
confirmation of whether the battery charges
confirmation of whether the display turns on
confirmation of whether the motor engages
confirmation of whether there was water exposure, impact, modification, or third-party repair
details of which troubleshooting steps have already been completed
Important Safety Notes
Do not continue riding if the bike continues shutting off while riding.
Do not ride if there is visible damage, overheating, smoke, burning smell, or water exposure.
Do not open the battery, controller, or sealed electrical components.
Do not force connectors.
Do not work on wiring while the bike is powered on or connected to the charger.
Contact support if you are unsure about any step.