Charger shows E05 and refuses to energize; RCD or RCBO may have tripped.

Safety first: Do not repeatedly reset an RCD that trips. Risk of electric shock. Isolate the charger and verify no exposed live parts.

• Step 1 – Visual inspection: Check the Jaguar wallbox housing and cable for signs of water ingress, cracks, or condensation. If the unit is wet inside, do not use it until fully dried and inspected by a technician.
• Step 2 – Check earth connection: With power OFF, verify that the protective earth conductor is securely connected at the charger terminal and at the distribution board.
• Step 3 – Drying period: If moisture is suspected, leave the charger isolated and allow 24–48 hours of drying in a dry environment. Then re-energize and test.
• Step 4 – Cable test: A qualified technician should perform insulation resistance tests between each live conductor and earth on the Jaguar cable and internal wiring.
• Step 5 – Leakage sensor module: If insulation tests pass but E05 persists, the internal residual current sensor (often a ring-type CT on the output) may be defective and should be replaced with a Jaguar-specified part.