Aventon – Motor Not Functioning & No Error Code Present TroubleshootingUpdated 2 days ago
This article explains how to troubleshoot a loss of motor function on an Aventon e-bike when no error code is displayed.
Use this article if your bike:
powers on normally
shows no motor-related error code
has no motor assistance
has no throttle response and no pedal assist response
This article applies to:
Aventon hub-drive bikes
Aventon mid-drive bikes
If your bike shows an error code, please follow the appropriate error code troubleshooting article instead.
If your bike still has throttle-only or pedal assist-only operation, use the dedicated troubleshooting articles for those issues instead.
Stop troubleshooting and contact support if anything appears damaged or unsafe.
Before You Start
Please prepare the following:
order number or proof of purchase
Aventon model
photo or video of the issue
when the issue first appeared
confirmation of whether the bike powers on
confirmation of whether the display turns on
confirmation of whether throttle and pedal assist both stopped working
confirmation of whether any error code appears
confirmation of whether the issue happened after riding, charging, transport, storage, impact, water exposure, modification, or third-party repair
photos of visible damage, if any
Safety Warnings
Do not continue riding if the bike has visible damage, electrical smell, smoke, overheating, or water exposure.
Do not open sealed electrical components.
Do not work on wiring while the bike is powered on or charging.
Do not force electrical connectors together.
Stop and contact support if you are unsure.
What This Issue Means
A complete loss of motor function without an error code may be caused by:
a loose motor connection
a loose harness or controller connection
damaged wiring
a damaged motor assembly
a damaged harness or controller component
The issue may affect:
throttle operation
pedal assist operation
all motor assistance functions
Possible Causes
Possible causes may include:
loose motor connection
loose controller connection
loose harness connection
dirt or grit inside accessible connectors
damaged motor cable
damaged harness cable
damaged controller cable
damaged motor assembly
impact or visible motor damage
damaged controller on hub-drive models
Troubleshooting Steps
Step 1 – Confirm the Bike Has No Error Code
Power the bike on and check the display.
Confirm whether an error code is shown.
If yes
Please use the appropriate error code troubleshooting article for your bike before continuing.
If no
Continue to Step 2.
If the issue clears
Continue monitoring the bike.
If the issue remains
Continue to Step 2.
Step 2 – Confirm There Is No Motor Function
Check whether:
throttle operation is completely lost
pedal assist operation is completely lost
If yes
Continue to Step 3.
If no
If only throttle or only pedal assist is affected, use the dedicated troubleshooting article for that issue.
If the issue clears
Continue monitoring the bike.
If the issue remains
Continue to Step 3.
Step 3 – Check for Visible Damage
Inspect the following areas for visible damage:
motor assembly
motor cable
accessible harness connections
controller connections
wiring near the motor area
Check for:
cuts
crushed cables
loose connectors
disconnected plugs
impact damage
signs of water exposure
If yes
If visible damage is found, please contact our support team with the photos/videos listed below so we can review the next step.
If no
Continue to Step 4.
If the issue clears
The issue may have been caused by a loose or partially disconnected connection.
If the issue remains
Continue to Step 4.
Step 4 – Check Accessible Motor and Harness Connections
Check the accessible connections between:
the controller and motor
the harness and motor
the harness and controller
Ensure the connections are:
firmly connected
properly threaded together if applicable
free from dirt or grit
Reconnect any loose accessible connectors and retest the bike.
If yes
If motor function returns, the issue was likely caused by a loose or contaminated connection.
Continue monitoring the bike.
If no
Continue to Step 5.
If the issue clears
The issue was likely connection-related.
If the issue remains
Continue to Step 5.
Step 5 – Check for Damaged Cables
Inspect accessible wiring for damage.
Pay close attention to:
motor-side cables
harness-side cables
controller-side cables
If yes
If damaged wiring is found, please contact our support team with the photos/videos listed below so we can review the next step.
If no
Continue to Step 6.
If the issue clears
The issue was likely related to damaged wiring or poor cable connection.
If the issue remains
Continue to Step 6.
Step 6 – Check the Motor Assembly
Inspect the motor assembly for:
impact damage
unusual noise
abnormal resistance
visible damage
If yes
Do not continue riding the bike.
Please contact our support team with the photos/videos listed below so we can review the next step.
If no
Continue to Step 7.
If the issue clears
Continue monitoring the bike.
If the issue remains
Continue to Step 7.
Step 7 – Identify Whether the Bike Is Hub-Drive or Mid-Drive
Check whether your bike uses:
a hub-drive motor
a mid-drive motor
If yes
Continue below.
If no
Please confirm your Aventon model before continuing.
If the issue clears
Continue monitoring the bike.
If the issue remains
Continue below.
Step 8 – Retest the Bike
Power the bike off and back on.
Retest:
throttle operation
pedal assist operation
overall motor assistance
If yes
If motor function returns, the issue may have been caused by a temporary connection issue.
Continue monitoring the bike.
If no
Please contact our support team with the photos/videos listed below so we can review the next step.
If the issue clears
Continue monitoring the bike.
If the issue remains
Contact support.
When To Contact Support
Please contact support if:
motor function does not return after these checks
throttle and pedal assist both remain non-functional
there is visible damage to wiring, connectors, or the motor assembly
there are unusual motor sounds or resistance
the bike has experienced impact, water exposure, transport damage, modification, or third-party repair
the issue appears related to the motor, harness, controller, or wiring
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 issue
photo of the powered-on display
confirmation that no error code is displayed
confirmation that both throttle and pedal assist are non-functional
photos of the motor area
photos of accessible connectors and wiring
photos of visible damage, if present
confirmation of whether unusual sounds are present
confirmation of whether the bike experienced water exposure, impact, modification, or third-party repair
steps already completed from this article
Important Safety Notes
Do not continue riding if the motor issue remains.
Do not ride if there is visible damage, overheating, smoke, burning smell, water exposure, or abnormal motor resistance.
Do not open the motor, controller, battery, or sealed electrical components.
Do not force electrical 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.