E17
BYD
Real-Time Clock / Scheduler Fault
Charger displays E17 and stops charging; may occur when scheduled charging or smart features are used.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Failed RTC chip on main control PCB, Depleted RTC backup battery, Corrupted time settings due to power loss, Firmware bug in scheduling logic
How to Fix / Troubleshooting
Safety first: This is a low-voltage control issue; no high-voltage work is required for basic checks.
- Disable schedules: In the BYD app or local interface, turn off all scheduled charging and attempt an immediate manual charge.
- Reset date and time: Manually set the correct time and date in the charger settings, then re-enable schedules if needed.
- Firmware update: Check for and apply any BYD firmware updates that address RTC or scheduling issues.
- Power-cycle: Turn off the breaker for 5 minutes, then restore power to reset the RTC.
- Persistent E17: The RTC hardware or backup battery on the main control PCB may be defective and require board replacement.
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Repair Difficulty
Medium
3/5
Required Part
Main Control PCB
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