Aventon Bikes with ACU-ECU (Aventon Control Unit) – E145 Bike Locked While Riding TroubleshootingUpdated 2 days ago
This article explains how to troubleshoot the E145 “Bike Locked While Riding” error on Aventon bikes equipped with the ACU-ECU (Aventon Control Unit).
Use this article if your bike:
- Shows error code E145
- Displays “Bike Locked While Riding”
- Does not allow PAS activation
- Appears to remain locked while riding
If you are unsure about any step or notice anything unsafe, stop troubleshooting and contact support.
Before You Start
Please prepare the following:
- order number
- Aventon model
- photo or video of the issue
- photo of the E145 error code
- when the issue first appeared
- whether the bike powers on
- whether the battery charges
- whether the display turns on
- whether the motor engages
- 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 has visible damage, overheating, smoke, burning smell, water exposure, motor resistance, or a persistent error code.
- 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 Error Means
E145 indicates the bike lock function is engaged while riding.
If the bike lock is engaged, PAS cannot be activated.
Possible Causes
- the bike lock is engaged
- bug in the current ECU software version
- damaged bike lock
- damaged ECU
Troubleshooting Steps
Step 1 – Check Whether the Bike Lock Is Engaged
Check the bike lock status in the Aventon app or on the bike display.
If yes
Disengage the bike lock.
After unlocking the bike, check whether the E145 code clears.
If no
Update the ECU software to the latest version using the Aventon app.
If the issue clears
The bike lock was likely engaged accidentally. Monitor the bike during future rides.
If the issue remains
Update the ECU software to the latest version using the Aventon app.
Step 2 – Update the ECU Software
Update the ECU software to the latest version using the Aventon app.
After the update completes, restart the bike and check whether the E145 code remains.
If the issue clears
The issue was likely caused by an ECU software bug. Monitor the bike during future rides.
If the issue remains
Replace the bike lock.
Step 3 – Replace the Bike Lock
If the E145 code still appears after updating the ECU software, the bike lock may be damaged.
Replace the bike lock.
After replacement, check whether the E145 code clears.
If the issue clears
The issue was likely caused by a faulty bike lock.
If the issue remains
Replace the ECU following the ECU replacement procedure.
Step 4 – Replace the ECU
If the error still remains, the ECU may be damaged.
Replace the ECU following the ECU replacement procedure.
If the issue clears
The issue was likely caused by a faulty ECU.
If the issue remains
Please contact support for further diagnosis.
When To Contact Support
Please contact support if:
- the E145 error remains after completing the steps above
- there is visible damage
- the bike does not power on
- the display does not power on
- the motor does not engage
- the issue appears related to the bike lock, ECU, wiring, or electrical system
- the bike has been exposed to water, crash, impact, transport damage, modification, or third-party repair
- you are unsure how to safely complete a step
- you need warranty, repair, replacement part, refund, or replacement support
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
- Aventon model
- photo or video of the E145 error code
- photo of the display
- photo of the battery area
- photos of accessible components related to the bike lock or ECU, if safe
- photos of visible damage
- confirmation of whether the bike powers 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, crash, impact, modification, or third-party repair
- list of troubleshooting steps already completed
Important Safety Notes
- Do not continue riding if the E145 error remains.
- Do not ride if there is visible damage, overheating, smoke, burning smell, water exposure, or motor resistance.
- Do not open the battery, controller, ECU, 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.