E01
Webasto
Proximity Pilot (PP) / Control Pilot (CP) Signal Fault
Charging session will not start; vehicle shows ‘charging error’ and Webasto charger status LED turns solid red with E01 on display or in app.
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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
Damaged Type 2 connector pins, Broken control pilot wire in cable, Faulty vehicle communication module in charger, Contaminated or wet charge plug
How to Fix / Troubleshooting
Safety first: Turn off the Webasto charger at the upstream breaker and verify the vehicle is in Park. Never work on live wiring.
- Inspect the Type 2 plug: Check the CP and PP pins for bending, corrosion, or burn marks. Clean light contamination with a dry, lint‑free cloth only.
- Check cable strain relief: At the charger head and at the wallbox, gently flex the cable. If the error appears only when the cable is bent, the internal pilot conductor may be broken.
- Test with another EV: If available, connect a different vehicle. If E01 persists, the fault is likely in the Webasto unit or cable, not the car.
- Power cycle: Turn off the breaker for 2 minutes, then restore power and retry a charge. Observe if the error clears.
- If damage is visible: Do not attempt to repair the cable yourself. Replace the complete Webasto charging cable/connector assembly or contact a qualified EVSE technician.
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Repair Difficulty
Hard
4/5
Required Part
Webasto Type 2 Charging Cable Assembly
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