CP_a006
Tesla
Line Voltage Out of Range
Charging stops intermittently; app shows CP_a006 and vehicle reports 'Charging interrupted'
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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
Utility supply voltage sag or surge, Loose service or panel connections causing voltage drop, Incorrect line voltage configuration, Shared circuit overloaded by other loads
How to Fix / Troubleshooting
Safety: Voltage issues can damage equipment. If lights flicker or other devices behave erratically, contact an electrician or utility.
- Check other loads: Note if high‑demand appliances (HVAC, ovens, dryers) are running when charging stops. Avoid running multiple large loads on the same service leg if possible.
- Measure voltage: A qualified electrician should measure line‑to‑line and line‑to‑ground voltage at the Wall Connector while charging to confirm it stays within Tesla's specified range (typically around 200–240 V for North America).
- Inspect panel connections: Loose lugs in the main panel or meter base can cause voltage fluctuations. Have an electrician tighten and, if needed, replace any overheated components.
- Reconfigure if miswired: Ensure the Wall Connector is wired for the correct supply type (single‑phase vs split‑phase) per Tesla installation manual.
- If voltage is stable: The internal voltage sensing circuit on the control board may be faulty, requiring Wall Connector replacement.
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Repair Difficulty
Hard
4/5
Required Part
Service panel feeder to Tesla Wall Connector
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