E06
General Motors Overtemperature Shutdown

GM home charger displays E06 and charging stops; may occur after long charging sessions or in hot weather.

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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

Blocked ventilation around charger, High ambient temperature in garage, Failed internal cooling fan (if equipped), Degraded thermal interface on power module heat sink

How to Fix / Troubleshooting

Safety first: If the enclosure feels very hot to the touch, turn OFF the breaker and allow the unit to cool before handling.

Steps to try:

  • Improve airflow: Ensure there is at least the clearance specified in the GM installation guide around the charger (typically several inches on all sides). Remove storage items blocking vents.
  • Reduce ambient heat: If installed in a closed garage, open doors or windows during charging in hot weather.
  • Shorten sessions or lower current: Use the GM app or charger settings to reduce maximum current (e.g., from 40A to 24A) and see if E06 stops occurring.
  • Inspect for dust buildup: With power OFF, gently vacuum external vents. Do not insert tools or liquids into the enclosure.

If E06 appears quickly even in cool conditions and with reduced current, the internal temperature sensor or cooling fan (if present) may have failed. Professional service or replacement of the charger is recommended.

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Repair Difficulty

Hard 4/5

Required Part

GM Power Module Cooling Assembly
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