Charging session does not start, vehicle shows ‘charging error’, charger display shows E01 immediately after plugging in.

Safety first: Disconnect the EV charger from mains power at the dedicated breaker before opening any covers. Do not work on live circuits.

• 1. Inspect the Type 2 plug and socket:
  • Unplug the vehicle and visually inspect the Type 2 connector on the cable and the wallbox socket.
  • Look for bent pins, burn marks, melted plastic, or corrosion on the CP (control pilot) and PP (proximity) pins.
  • Clean light contamination with electrical contact cleaner and a lint‑free swab. Do not use abrasives.
• 2. Try a different cable (if the unit has a socket, not tethered cable):
  • If your Heidelberg charger has a Type 2 socket, test with a known‑good cable.
  • If E01 disappears with another cable, the original cable is defective and should be replaced.
• 3. Check cable strain relief and internal connections:
  • Isolate power, open the front cover following the Heidelberg installation manual.
  • Inspect the internal termination of the Type 2 socket or tethered cable on the main control board.
  • Ensure CP and PP conductors are firmly clamped and not broken at the terminal.
• 4. Reset the charger:
  • Turn off the circuit breaker for 60 seconds, then turn it back on.
  • Observe if E01 clears and a new charging session can be started.
• 5. If fault persists:
  • The CP/PP driver circuit on the main control PCB may be defective.
  • Do not bypass pilot circuits; contact a qualified technician to test and, if necessary, replace the main control board.