Charging session does not start; EVSE shows E01 on LED/display and vehicle does not lock the connector

Safety first: Before opening the wallbox, switch OFF the upstream circuit breaker and, if present, the external RCD. Verify absence of voltage with a suitable tester. Only qualified persons should open the charger housing.

Step-by-step checks:

• 1. Power-cycle the charger: Turn the supply breaker OFF for 60 seconds, then ON again. Wait for the KEBA charger to complete its self-test and watch if E01 reappears.
• 2. Try a different cable and vehicle: If you use a detachable Type 2 cable, test with another known-good cable. If possible, test with a second EV to rule out a vehicle-side fault.
• 3. Inspect plug and socket: Check the Type 2 plug and the KEBA socket for bent pins, melted plastic, corrosion, or dirt. Clean light contamination with a dry, lint-free cloth only. Do not use lubricants or aggressive cleaners.
• 4. Check cable coding (PP resistor): On detachable cables, verify that the cable is correctly rated and coded (PP resistor intact). A cable with a broken PP resistor may be rejected by the KEBA controller.
• 5. Internal inspection (qualified person): With power isolated, open the KEBA housing and visually inspect the control pilot wiring from the main control board to the socket: look for loose terminals, broken conductors, or signs of overheating. Reseat plug-in connectors on the main PCB.
• 6. Replace suspect parts: If the fault persists with multiple vehicles and cables, the CP/PP circuitry on the main control board is likely defective. Replace the KEBA main control board or the Type 2 socket assembly according to KEBA service documentation.

If you are not trained to work on live EVSE equipment, contact a certified KEBA service partner.