E09
Jaguar Internal RCD Self-Test Failure

Charger shows E09; app or display indicates ‘RCD self-test failed’.

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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

Defective internal RCD test circuit, Stuck RCD mechanism in Jaguar wallbox, Wiring error bypassing internal RCD, Faulty residual current sensor

How to Fix / Troubleshooting

Safety first: Do not bypass or disable RCD protection. Risk of serious electric shock.

  • Step 1 – Power cycle: Turn off the charger at the breaker for 2 minutes, then restore power and see if the self-test passes.
  • Step 2 – Mechanical test (if accessible): If the Jaguar wallbox has a test button, press it to verify mechanical operation of the RCD. If it does not trip, the RCD is faulty.
  • Step 3 – Inspect internal RCD module: With power OFF, open the enclosure and locate the RCD or RCBO module. Check for signs of overheating or mechanical damage.
  • Step 4 – Replace RCD module: If the RCD fails mechanical or electrical tests, it must be replaced with a Jaguar-approved part by a qualified electrician.
  • Step 5 – Sensor check: If a separate residual current sensor (CT) is used, verify its wiring and orientation. A failed sensor can cause self-test errors and may need replacement.
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Repair Difficulty

Professional Required 5/5

Required Part

Jaguar Wallbox Internal RCD / Residual Current Sensor
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