E06
Cadillac Overcurrent / Output Overload Fault

Charger display shows E06; unit may start to charge briefly then stop.

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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

Shorted output wiring inside charger, Internal failure of current sensor (CT) on control board, Vehicle requesting current above charger rating, Loose or overheated output terminals at contactor

How to Fix / Troubleshooting

Safety first: Turn OFF the breaker immediately if you suspect overheating or smell burning. Do not continue to reset a tripping charger.

Steps to try:

  • Check vehicle charge settings: In the vehicle’s charging menu, ensure the maximum charge current is not set above the charger’s rated output.
  • Inspect for heat: With power OFF, feel the cable and connector. If they were excessively hot during use, discontinue use until inspected by a technician.
  • Power cycle and retest: After a 5‑minute cool‑down with breaker OFF, restore power and try again. If E06 recurs quickly, an internal fault is likely.

When to call a technician: Persistent E06 indicates a problem with the current sensing circuit, contactor wiring, or internal bus bars. A qualified EVSE technician should open the unit, inspect for damage, and replace the control board or internal wiring as needed.

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Repair Difficulty

Professional Required 5/5

Required Part

Cadillac EVSE Current Sensor and Output Bus Assembly
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