E16
Zencar Plug-In Detection / Socket Sensor Fault (for socketed models)

Charger displays E16; unit may not recognize when the vehicle is connected or disconnected.

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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

Failed plug-in microswitch in socket, Broken detection wiring, Debris in socket preventing full insertion, Faulty detection input on control board

How to Fix / Troubleshooting

Safety first: Turn off power before inspecting the socket interior.

  • Inspect socket: For Zencar wallboxes with a Type 2 socket, check for debris, melted plastic, or foreign objects that could block full plug insertion.
  • Test mechanical switch: Gently insert and remove the plug while listening for a click from the internal microswitch. No click suggests a failed switch.
  • Check wiring: With power OFF, verify the detection switch wires are intact and firmly connected to the main control PCB.
  • Clean contacts: Use appropriate contact cleaner to remove light oxidation from socket contacts (do not use abrasive tools).
  • If detection still fails: Replace the Type 2 socket assembly with plug-in detection switch or repair the detection circuit on the main control PCB.
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Repair Difficulty

Hard 4/5

Required Part

Type 2 Socket Assembly with Detection Switch
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