CP_a017
Tesla
Vehicle Identification / Handshake Failure
App shows CP_a017; Wall Connector LEDs indicate error; charging may start then immediately stop
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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
Dirty or damaged connector pins, Faulty pilot/proximity circuits, Incompatible firmware between vehicle and Wall Connector, Internal handshake logic fault
How to Fix / Troubleshooting
Safety: Always de‑energize before opening the Wall Connector. Handle the connector gently to avoid pin damage.
- Clean connector and port: Use a dry, lint‑free cloth to clean the Tesla connector pins and the vehicle charge port. Do not use liquids or sprays.
- Inspect pins: Look for bent, recessed, or corroded pins in the handle. If pins are damaged, the cable assembly must be replaced.
- Test with another charger: Try charging the vehicle at a different Tesla charger to determine if the issue is with the car or the Wall Connector.
- Update vehicle software: Ensure the vehicle is on the latest Tesla firmware, as some handshake issues are resolved via updates.
- If CP_a017 remains only on this Wall Connector: The internal handshake logic or pilot circuitry is likely defective; replace the Wall Connector.
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Repair Difficulty
Medium
3/5
Required Part
Tesla Wall Connector connector pins and pilot/proximity circuitry
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