E010
Volkswagen Communication Bus Error (Internal CAN/RS485)

VW wallbox shows E010; charger does not respond to app commands; local LEDs may still work.

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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

Loose low‑voltage harness between control PCB and power module, Faulty communication transceiver on main board, Electrical noise from nearby equipment, Water ingress on low‑voltage connectors

How to Fix / Troubleshooting

Safety first: Even low‑voltage harnesses are inside a high‑voltage enclosure. Only qualified technicians should open the unit.

  • Eliminate interference: If heavy machinery, welders, or large motors are on the same supply, avoid operating them while charging and test again.
  • Power cycle: Turn off the VW wallbox breaker for 2–3 minutes, then restore power. Wait for full boot before testing.
  • Check for moisture: Inspect the outside of the charger for signs of condensation, water streaks, or a compromised top seal. If water ingress is suspected, keep power off and call a technician.

If E010 remains, a technician should inspect internal harnesses, reseat connectors, and test the communication bus between the control and power boards. Replacement of the main PCB or power module may be required.

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Repair Difficulty

Professional Required 5/5

Required Part

VW wallbox main control PCB
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