CP_a007
Tesla
Overtemperature Protection (Internal)
Wall Connector LEDs indicate error and app shows CP_a007; charger will not energize
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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 Wall Connector, Direct sun exposure on dark surface, Loose internal connections causing hot spots, Failing temperature sensor on control board
How to Fix / Troubleshooting
Safety: Overheating can lead to fire risk. Do not attempt to bypass thermal protection.
- Allow cooling: Stop charging and let the Wall Connector cool for at least 30–60 minutes. Shade the unit if it is in direct sunlight.
- Check installation clearance: Ensure there is adequate space around the Wall Connector per Tesla's installation guidelines. Remove any objects blocking airflow.
- Inspect for heat damage: With power off, remove the cover (qualified person) and look for discolored wiring, melted insulation, or burnt smell near the terminal block and contactor.
- Tighten terminals: Loose lugs can overheat. Verify all terminal screws are torqued to Tesla's specified values.
- If error recurs at normal temperatures: The internal temperature sensor or control board is likely defective and the Wall Connector should be replaced.
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Repair Difficulty
Hard
4/5
Required Part
Tesla Wall Connector internal temperature sensor and terminal block
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