E18
Porsche
Non-Volatile Memory / Configuration Storage Fault
Porsche EV home charger displays E18; internal memory or configuration cannot be saved, and settings revert after power cycle.
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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 flash memory on main control PCB, Corrupted configuration data, Excessive write cycles causing memory wear, Firmware bug affecting save operations
How to Fix / Troubleshooting
Safety first: Memory faults are not directly hazardous, but always disconnect power before opening the unit.
- Factory reset: Perform a factory reset of the Porsche wallbox according to the manual, then reconfigure essential settings and test whether they persist after a power cycle.
- Firmware update: Install the latest firmware, which may include fixes for memory handling and configuration storage.
- Avoid frequent changes: Minimize repeated configuration changes that could stress the memory until the issue is resolved.
- Technician PCB replacement: If settings still do not save or E18 persists, the non-volatile memory on the main control PCB is likely defective and the board should be replaced.
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Repair Difficulty
Hard
4/5
Required Part
Non-volatile memory on main control PCB
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