Peugeot iOn Fault Memory Lock Error

I had a similar issue with my iOn. Same error message and everything. Did the error pop up after inactivity, or a long drive? These electric cars get funky when the voltage isn't right.

The error appeared after the car sat for three days while connected to the charger. It's still there after charging and short trips. Can you explain more about the undervoltage issue you had?

Yeah, that sounds right. Mine did the same after sitting. It's likely the control unit acting up because of a voltage drop. I tried a few things, but I had to take it to a workshop. They reset the ECU and checked the battery. That fixed it.

Based on your experience, I'll have a technician inspect it. I have an estimate of 240€ to fix it, which seems reasonable. Thanks again.