CP_a016
Tesla
Incorrect Grid Type or Phase Configuration
Charging limited or disabled; app shows CP_a016; vehicle may show 'Charging limited by grid configuration'
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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
Wall Connector configured for wrong supply type, Miswired phases on three‑phase installation (where applicable), Incompatible voltage selection vs actual supply
How to Fix / Troubleshooting
Safety: Incorrect phase configuration can damage equipment. Only a qualified electrician should modify wiring.
- Verify supply type: Confirm whether your installation is single‑phase, split‑phase, or three‑phase, and match this to Tesla's supported configurations.
- Check wiring: Ensure line conductors are connected to the correct terminals (L1, L2, L3 if applicable) and that any unused terminals are left as specified by Tesla.
- Reconfigure Wall Connector: Use the commissioning interface to select the correct grid type and breaker size.
- Test charging: After corrections, attempt charging and monitor for CP_a016 recurrence.
- If error persists with correct wiring: The internal phase detection circuitry may be faulty and the Wall Connector may need replacement.
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Repair Difficulty
Hard
4/5
Required Part
Tesla Wall Connector phase detection and configuration circuitry
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