E10 error; charging stops and display indicates residual current device trip or leakage fault.

Safety first: Residual current faults indicate potential shock risk. Do not repeatedly reset without investigation.

• Test with another vehicle: Connect a different EV to determine whether the fault is vehicle-specific. If only one vehicle triggers E10, the issue may be in that vehicle’s onboard charger.
• Inspect internal wiring: With power OFF, verify that all phase and neutral conductors pass correctly through the DC residual current sensor (toroid) as per Mennekes wiring diagram. Incorrect routing can cause false trips.
• Check for damage: Look for nicks or burns on conductors passing through the sensor. Replace damaged cables.
• Sensor test: If available, use Mennekes diagnostic tools to read DC residual current sensor values. Replace the sensor or RCM module if readings are unstable or out of range.

If the error persists with multiple vehicles and wiring is correct, the internal RCM or main control PCB should be replaced by a qualified technician.