E004
Ford
Internal Overtemperature Protection Trip
Charger display shows E004; unit powers up but will not deliver current to the vehicle.
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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 openings on charger enclosure, Failed internal cooling fan (if equipped), High ambient temperature around charger, Loose or overheated power terminals inside charger
How to Fix / Troubleshooting
Safety first: Turn OFF the breaker before removing any covers. Overheated components can cause burns.
- 1. Check ambient conditions: Ensure the Ford EV charger is not installed in direct sunlight or in a confined, unventilated space. Ambient temperature should be within the range specified in the installation manual.
- 2. Inspect ventilation: Make sure all vents on the charger enclosure are clear of dust, spider webs, or obstructions. Gently vacuum or brush away debris without forcing anything into the vents.
- 3. Allow cool-down: Leave the charger powered OFF for at least 30 minutes to cool. Then restore power and attempt to charge again.
- 4. Internal inspection (qualified persons only): With power OFF, remove the front cover. Look for signs of overheating: browned circuit boards, melted insulation, or discolored terminals. Verify that all power lugs are tight using an insulated screwdriver and torque to manufacturer specs if available.
- 5. Cooling fan check (if present): When the charger is active, a small internal fan may run. If you never hear the fan, it may have failed and should be replaced.
- 6. If E004 recurs frequently: Contact a professional to test internal temperature sensors and replace the control board or fan assembly as needed. Persistent overheating can lead to permanent damage.
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Repair Difficulty
Medium
3/5
Required Part
Internal Cooling Fan and Temperature Sensor Assembly
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