Land Rover Unstable Pilot State / Contactor Chatter

Land Rover charger clicks repeatedly (contactor engaging and disengaging) when plugged into the vehicle, but charging does not start.

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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

Unstable control pilot voltage due to poor CP connection, Faulty contactor coil or driver circuit, Vehicle rapidly changing requested current, Loose low-voltage harness between control board and contactor

How to Fix / Troubleshooting

Safety warning: Rapid switching can damage components. Do not continue to plug/unplug repeatedly.

  • 1. Unplug and wait: Disconnect the vehicle and wait 2–3 minutes before retrying to allow electronics to reset.
  • 2. Inspect CP and PP pins: Check the Type 2 plug for contamination or damage on the small pilot and proximity pins. Clean gently if needed.
  • 3. Check low-voltage harness: With power OFF, open the charger and ensure the contactor coil and feedback wires are firmly connected to the control board.
  • 4. Test with another vehicle: If chatter only occurs with one vehicle, the issue may be vehicle-side.
  • 5. If chatter continues with multiple vehicles: The contactor or control board driver may be faulty. Have a technician test and replace the contactor or board.
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Repair Difficulty

Hard 4/5

Required Part

Main Power Contactor / Low-Voltage Control Harness
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