E17
Porsche
Front Panel Display / HMI Communication Fault
Porsche EV home charger shows E17; display or status LEDs behave erratically or remain blank while the unit appears powered.
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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
Loose or damaged ribbon cable between main control PCB and front panel, Failed LCD/LED display module, Faulty HMI controller on front panel PCB, Corrupted display firmware
How to Fix / Troubleshooting
Safety first: Disconnect power at the breaker before removing the front panel.
- Basic reset: Turn off power for 2 minutes, then restore and observe whether the display returns to normal.
- Check for condensation: Look for moisture behind the front panel window. If present, allow the unit to dry thoroughly before further use.
- Technician cable check: A technician should remove the front panel and inspect the ribbon cable or harness connecting it to the main control PCB. Reseat or replace the cable if damaged.
- Replace front panel module: If the cable is good but the display remains blank or corrupted, replace the front panel HMI module with a Porsche-approved part.
- Verify main PCB output: If a new front panel does not resolve the issue, the HMI interface on the main control PCB may be defective and require board replacement.
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Repair Difficulty
Medium
3/5
Required Part
Front panel HMI / display module
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